Publications
Change search
Refine search result
12 1 - 50 of 79
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Antonson, Hans
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Hrelja, Robert
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    People and parking requirements: Residential attitudes and day-to-day consequences of a land use policy shift towards sustainable mobility2017In: Land use policy, ISSN 0264-8377, E-ISSN 1873-5754, no 62, p. 213-222Article in journal (Refereed)
    Abstract [en]

    A land use policy shift is taking place in a growing number of cities regarding parking, whereby a conventional supply management approach is being replaced with a parking management approach. As part of this policy shift, many cities are lowering their parking requirements.

    This study analysed changes in car use, car ownership, spatial parking patterns and the consequences for the everyday life of residents in a housing area with a relatively restrictive parking requirement in Gothenburg, the second largest city in Sweden. The housing area, a concrete example of how lowering parking requirements can be used to achieve targets on reduced car use and sustainable urban development, is used to discuss how parking policy should be applied to achieve the desired effect.

    The results show that the consequences of the restrictive requirement was paradoxically small in the study area. In practice, the requirement did not result in a decrease in the number of parking spaces, because e.g. of access to parking in neighbouring residential areas. This shows how important it is to adopt a holistic approach in parking policy, by e.g.introducing more restrictive parking requirements in parallel with other measures, such as raising parking charges and decreasing the number of public parking spaces. It also shows that planning of parking must be coordinated with other urban planning functions. Otherwise, the actual contribution of a shift in parking policy to the development of a more environmentally friendly transport system and city risks being small, despite lower parking requirements

  • 2.
    Antov, Dago
    et al.
    Tallinn University of Technology.
    Banet, Aurélie
    Barbier, Cécile
    Bellet, Thierry
    Bimpeh, Yaw
    Boulanger, Ankatrien
    Brandstätter, Christian
    Britschgi, Virpi
    Brosnan, Michael
    Buttler, Ilona
    Cestac, Julien
    De Craen, Saskia
    Delhomme, Patrice
    Dogan, Ebru
    Drápela, Emil
    Forward, Sonja
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Freeman, R
    Furian, Gerald
    Gábor, Miklós
    Goldenbeld, Charles
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Holte, Hardy
    Kraïem, Sami
    Papadimitriou, Eleonora
    Podlesek, Anja
    Polič, Marko
    Sánchez-Martín, Fermina
    Sardi, Gian-Marco
    Schmidt, Eike-Andreas
    Silverans, Peter
    Siska, Tamas
    Skládaná, Pavlina
    Theofilatos, Athanasios
    Von Below, Ariande
    Yannis, George
    Zaidel, David
    Zavrides, Neophytos
    Delhomme, Patricia (Editor)
    IFSTTAR.
    European road users' risk perception and mobility: the SARTRE 4 survey2012Report (Other academic)
    Abstract [en]

    The SARTRE (Social Attitudes to Road Traffic Risk in Europe) project started in 1991. It consists of a European wide survey about knowledge of road traffic laws and road traffic risks, attitudes regarding road safety issues, reported road traffic behaviours, transport habits and needs in several European countries. Various topics related to road safety are in the focus of the project such as alcohol, drugs, or phone use while driving, speeding, use of advanced driver assistance systems and the transport infrastructure and environment.

  • 3.
    Aretun, Åsa
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Berg, Jessica
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Henriksson, Malin
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Ihlström, Jonas
    Swedish National Road and Transport Research Institute, Traffic and road users, Human Factors in the Transport System.
    Janhäll, Sara
    RISE.
    Eric, Sjögren
    Cykelpoolen i Sverige AB.
    Silvander, Therese
    Energikontor Norra Småland.
    GoMate – Diversifierad elfordonspool för den förtätade staden: slutrapport2019Report (Other academic)
    Abstract [en]

    In the GoMate project, EV sharing services has been tested in two residential areas located in the central city of Jönköping; services consisting of e-bikes, e-cargo bikes and e-cars. The aim of the project has been to investigate whether and to what extent EV sharing services can contribute to reduced car use in favor of the use of more sustainable mobility solutions. The results show that a diversified EV club has the potential to reduce car use. It is mainly the e-bike that replaces car trips for everyday travel, which in the long term can reduce car holdings in favor of the use of e-car services for occasional travel.

    However, if the potential is to be realized, price and business models are required for these services that stimulate reduced car use, considered as a process that can be expected to occur gradually over time. Such a process also needs to be supported by policy instruments and measures that limit car use in central city areas.

    If the potential is to be realized, the services also need to be scaled up considerably with respect to the number of vehicles per apartment. Although there was a relatively large EV club with a total of 17 (of which 15 were bicycles) vehicles for 160 households, which were tested in the project, it only had the capacity to supply a very small proportion of the residents' total travel, and with very little effects regarding reduction in energy use and carbon emissions.

  • 4.
    Bell, Daniel
    et al.
    FACTUM Chaloupka & Risser OHG .
    Pokriefke, Eike
    FACTUM Chaloupka & Risser OHG .
    Risser, Ralf
    FACTUM Chaloupka & Risser OHG .
    Biler, Stanislav
    CDV Centrum Dopravního Výzkumu (Transport Research Centre).
    Šenk, Petr
    CDV Centrum Dopravního Výzkumu (Transport Research Centre).
    Parkes, Andrew
    TRL Limited Transport Research Laboratory.
    Stannard, Jenny
    TRL Limited Transport Research Laboratory.
    Armoogum, Jimmy
    IFSTTAR - French institute of science and technology for transport, development and networks.
    Marin-Lamellet, Claude
    IFSTTAR - French institute of science and technology for transport, development and networks.
    Gabaude, Cathrine
    IFSTTAR - French institute of science and technology for transport, development and networks.
    Madre, Jean-Loupe
    IFSTTAR - French institute of science and technology for transport, development and networks.
    Alauzet, Aline
    IFSTTAR - French institute of science and technology for transport, development and networks.
    Monterde-i-Bort, Hector
    Universitat de Valencia- Estudi General.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Mobility Patterns in the Ageing Populations: Work package 2 - Summary Report2013Report (Other academic)
  • 5.
    Cedersund, Hans-Åke
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Bilbältesanvändningen i Sverige 20092010Report (Other academic)
    Abstract [sv]

    VTI has observed seat belt use in a number of towns in Central Sweden since 1983. The observations last year were made over a total of nine days in August–September 2009, approximately one day per measuring point. The total number of vehicles observed was over 54,400 passenger cars and 5,900 other vehicles. When VTI commenced its measurement series in 1983, seat belt use by adult passengers in the back seat was a modest 10%. It increased in one jump to 60% when the law on seat belt use by adults in the car as a whole came into force on July 1, 1986. Today, close to 80% of all adult back seat passengers use a belt. The corresponding level for children in the back seat has been consistently about 10-20 percentage points higher. In 2009, about 95% of all children in the back seat wore a seat belt.

  • 6.
    Cedersund, Hans-Åke
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    En modell för att prognostisera ungdomars körkortstagande2006Report (Other academic)
    Abstract [sv]

    The propensity of young people to take driving licence was rather consistent up until 1990. Around 1990, the behaviour of young people changed in many respects. They continued living at home for a longer period of time, they became established later and with less favourable conditions of employment in working life, they studied to a greater extent and, above all, studied longer, they started families later. A sign of the times was that they also put off taking driving licence. Searches of the literature have shown that hardly any models have been presented that describe the taking of driving licence. A model produced earlier at VTI has functioned as a basis in this study. Separate models of the propensity to take driving licence have been estimated for each age group between 18 and 24. Independent variables in the model are a driving licence cost index and the proportion of 24-year olds who have post upper-secondary school education. Official statistics published concerning the taking of driving licence at various ages show, for example, the proportion of 18-year olds who have taken a driving licence during the calendar year in which they attain the age of 18. If one wants data regarding how many took a driving licence before their 19th birthday, special analyses are required. An estimation can be made based on the result of the model, but in the report a more ambitious attempt is also presented.

  • 7.
    Eriksson, Jenny
    et al.
    Swedish National Road and Transport Research Institute, Traffic and road users, Traffic safety, society and road-user.
    Gustafsson, Susanne
    Swedish National Road and Transport Research Institute, Traffic and road users, Traffic safety, society and road-user.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Forsman, Åsa
    Swedish National Road and Transport Research Institute, Traffic and road users, Traffic safety, society and road-user.
    Planering av en regional resvaneundersökning i Östergötland: Samverkan mellan olika intressenter2016Report (Other academic)
  • 8.
    Eriksson, Jenny
    et al.
    Swedish National Road and Transport Research Institute, Traffic and road users, Trafiksäkerhet och trafiksystem, TST.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Rogerson, Sara
    Swedish National Road and Transport Research Institute, Society, environment and transport, Traffic analysis and logistics.
    Sörensen, Gunilla
    Swedish National Road and Transport Research Institute, Traffic and road users, Trafiksäkerhet och trafiksystem, TST.
    Silvano, Ary P.
    Swedish National Road and Transport Research Institute, Traffic and road users, Trafiksäkerhet och trafiksystem, TST.
    Nilsson, Annika
    Trivector.
    Wahl, Charlotte
    Sweco.
    Ullberg, Martin
    Sweco.
    Adell, Emelie
    Trivector.
    Intressent- och behovsanalys för resvaneundersökningar: resultat från intervjuer och enkätundersökning2017Report (Other academic)
    Abstract [en]

    In Sweden, national travel surveys are regularly carried out by Transport Analysis, a governmental agency. However, in the last decade travel survey studies have suffered with problems such as high rate of non-response, coverage, costs and reporting burden. Therefore, this project is underway aimed at investigating and proposing new methods for data collection on people’s mobility. The project is divided into five deliverables (work packages – WP), of which this report is the second one (WP2). The purpose is to carry out an analysis of stakeholders’ needs regarding future requirements of travel surveys. This includes identifying the questions that travel surveys can answer.

    Telephone interviews have been conducted with 20 stakeholder representatives and internet-based questionnaires were sent to 142 respondents (response 81 persons, response rate 57 percent). The stakeholders’ representatives were classified into three types of organizations: public sector, research organizations and other actors. Based on their own experience, an analysis has been conducted regarding what is requested from the national travel survey. The analysis show that key aspects of today’s and tomorrow’s travel survey users include (i) mode choice, (ii) trip purpose, (iii) how travel behavior changes over time, and (iv) how different groups travel. To be able to answer these questions, both individual and travel information are required.

  • 9.
    Eriksson, Jenny
    et al.
    Swedish National Road and Transport Research Institute, Traffic and road users, Traffic Safety and Traffic System.
    Lindborg, Eva
    Trafikanalys.
    Adell, Emeli
    Trivector .
    Holmström, Andreas
    Trafikanalys.
    Silvano, Ary P.
    Swedish National Road and Transport Research Institute, Traffic and road users, Traffic Safety and Traffic System.
    Nilsson, Annika
    Trivector .
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Wiklund, Mats
    Trafikanalys.
    Dahlberg, Lina
    Trivector.
    New Ways of Collecting Individual Travel Information: Evaluation of data collection and recruitment methods2018Report (Other academic)
    Abstract [en]

    The overall purpose of the project is to conduct a demonstration study that shows how two data collection methods that have been developed to collect travel survey data perform in the field, and how they perform compared with traditional TS (i.e., postal questionnaires and/or telephone interviews). The project is also intended to provide a better understanding of the ways in which different recruitment methods of respondents can be used so that future TS can be more cost effective.

    The two collection methods tested consist of a mobile app and an online questionnaire with a map to assist the respondents to identify travel destinations. Three recruitment methods were used, i.e., recruitment via random sampling, a web panel, and crowdsourcing. The portion of the random sample that received an online questionnaire was divided into two groups. Half the group was given no incentive, while the other half received a gift card worth SEK 100 after answering the questioner. Those who were recruited via a web panel and were to use the mobile app were rewarded in the form of a gift card worth SEK 100 if, at minimum, they made corrections to trips made on one day registered in the mobile app. A nonresponse analysis was performed of the random sample for both the online questionnaire and the mobile app. Cost estimates for each collection method and recruitment method were also performed, as were uncertainty estimates.

    Overall, the study shows that the mobile app registered significantly more trips per respondent than did the online questionnaire, while the distances travelled were comparable. There are several possible interpretations of this. One is that people who responded to the online questionnaire either forget about and/or combined short trips (particularly trips made for the purposes of leisure or shopping, and using the travel modes walking and car). One presumable explanation for this is that it is easier to confirm/correct the trips that the mobile app suggests than it is to recall and enter all trips in an online questionnaire. Another possible interpretation is that people responding to different data collection methods have different travel patterns. Yet another explanation is connected to technique issues regarding the different data collection methods.

  • 10.
    Eriksson, Jenny
    et al.
    Swedish National Road and Transport Research Institute, Traffic and road users, Traffic Safety and Traffic System.
    Lindborg, Eva
    Trafikanalys.
    Adell, Emeli
    Trivector.
    Holmström, Andreas
    Trafikanalys.
    Silvano, Ary P.
    Swedish National Road and Transport Research Institute, Traffic and road users, Traffic Safety and Traffic System.
    Nilsson, Annika
    Trivector.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Wiklund, Mats
    Trafikanalys.
    Dahlberg, Lina
    Trivector.
    Nya sätt att samla in individuell resvaneinformation: utvärdering av insamlings- och rekryteringsmetoder2018Report (Other academic)
    Abstract [sv]

    Inom samverkansprogrammet Nästa generations resor och transporter, som Trafikanalys är huvudansvarig för, har man identifierat ett behov av att finna och utveckla nya lösningar för resvaneundersökningar (RVU:er). Bakgrunden till detta är bland annat sjunkande svarsfrekvenser med dagens metoder, vilket skulle kunna ge problem med representativiteten. Det anses som mycket angeläget att utveckla nya metoder för datainsamling för framtidens RVU:er, både på kort och lång sikt. Det övergripande syftet med projektet är att göra en demonstrationsstudie som visar hur två datainsamlingsmetoder som har utvecklats för att samla in resevaneundersökningsdata presterar i fält, samt hur de presterar jämfört med ”traditionell” RVU (postal enkät och/eller telefonintervjuer). Projektet syftar också till att få bättre förståelse för hur olika rekryteringsmetoder kan användas för att framtida RVU:er ska kunna bli mer kostnadseffektiva. De två insamlingsmetoder som testats är webbenkät med karta och mobilapp. Tre rekryteringsmetoder har använts och dessa är rekrytering via slumpmässigt urval, webbpanel och crowdsourcing. Den del av det slumpmässiga urvalet som fick en webbenkät delades in i två grupper. Halva gruppen fick inget incitament medan den andra halvan fick ett presentkort till ett värde av 100 kr. De som rekryterades via webbpanel och som skulle använda mobilappen, fick en belöning i form av ett presentkort till ett värde av 100 kr om minst en dags resor rättades i mobilappen. Det genomfördes en bortfallsanalys på det slumpmässiga urvalet för både webbenkät och mobilapp. En kostnadsuppskattning av respektive insamlingsmetod och rekryteringsmetod har också genomförts. Vi tog även fram osäkerhetsskattningar. Studien lokaliserades till Göteborgsregionen eftersom Göteborgs stad då genomförde en traditionell resvaneundersökning under samma period. Syftet med att välja samma område och period var att kunna jämföra våra mindre pilotundersökningar med resultaten från en större traditionell undersökning. Målpopulation var invånare mellan 16–84 år i 21 kommuner i Göteborgsregionen, dvs. samma som i Göteborgs stads undersökning.

  • 11.
    Eriksson, Jenny
    et al.
    Swedish National Road and Transport Research Institute, Traffic and road users, Traffic Safety and Traffic System.
    Lindborg, Eva
    Trafikanalys.
    Adell, Emeli
    Trivector.
    Holmström, Andreas
    Trafikanalys.
    Silvano, Ary P.
    Swedish National Road and Transport Research Institute, Traffic and road users, Traffic Safety and Traffic System.
    Nilsson, Annika
    Trivector.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Wiklund, Mats
    Trafikanalys.
    Dahlberg, Lina
    Trivector.
    Nya sätt att samla in inviduell resvaneinformation: Utvärdering av insamlings- och rekryteringsmetoder2018Report (Other academic)
    Abstract [sv]

    Inom samverkansprogrammet Nästa generations resor och transporter, som Trafikanalys är huvudansvarig för, har man identifierat ett behov av att finna och utveckla nya lösningar för resvaneundersökningar (RVU:er). Bakgrunden till detta är bland annat sjunkande svarsfrekvenser med dagens metoder, vilket skulle kunna ge problem med representativiteten. Det anses som mycket angeläget att utveckla nya metoder för datainsamling för framtidens RVU:er, både på kort och lång sikt.

    Det övergripande syftet med projektet är att göra en demonstrationsstudie som visar hur två datainsamlingsmetoder som har utvecklats för att samla in resevaneundersökningsdata presterar i fält, samt hur de presterar jämfört med ”traditionell” RVU (postal enkät och/eller telefonintervjuer). 

    Projektet syftar också till att få bättre förståelse för hur olika rekryteringsmetoder kan användas för att framtida RVU:er ska kunna bli mer kostnadseffektiva. De två insamlingsmetoder som testats är webbenkät med karta och mobilapp. Tre rekryteringsmetoder har använts och dessa är rekrytering via slumpmässigt urval, webbpanel och crowdsourcing.

  • 12.
    Forsman, Åsa
    et al.
    Swedish National Road and Transport Research Institute, Traffic and road users, Traffic safety, society and road-user.
    Hrelja, Robert
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Wiklund, Mats
    Swedish National Road and Transport Research Institute, Infrastructure, Infrastructure maintenance.
    Co-operation between police and social treatment services offering treatment to drink and drug drivers: experience in Sweden2011In: Traffic Injury Prevention, ISSN 1538-9588, E-ISSN 1538-957X, Vol. 12, no 1, p. 9-17Article in journal (Refereed)
    Abstract [en]

    Objective: To describe and analyze a measure that has been introduced in Sweden with the objective of quickly offering treatment for the alcohol or drug problems suspected drink or drug drivers may have. The goal of the measure is that every suspected drink or drug driver shall, as soon as apprehended by the police, be offered contact with the social services or the dependency care and treatment service, which can offer a consultation and, if needed, suitable treatment.

    Method: Interviews and questionnaire surveys, as well as forms that describe the treatment received by each individual case.

    Results: About 20 percent of all those who receive the offer from the police accept contact with the social services or the care and treatment service, and approximately 40 percent of these also attend the consultation. There is a favorable fundamental attitude to the method among the participating authorities. However, some shortcomings in application are revealed. One example concerns drug drivers who are offered contact with the social services or the care and treatment service to a considerably lesser extent than drink drivers. Another neglected group are the people who are at first suspected of drink driving but are later found to have an alcohol concentration below the legal limit. Compared with those who have an alcohol concentration above the legal limit, this group is offered contact to a lesser extent and also have a lower propensity to accept the offer.

    Conclusions: The results indicate a strong support for the method from involved authorities, but participation could be improved by giving more attention to neglected groups.

  • 13.
    Forward, Sonja
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Ahlberg, Anders
    Linköpings universitet.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Björklund, Gunilla
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Utvärdering av fortbildning för yrkeskompetensbevis: Delkurs 1: Sparsam körning2018Report (Other academic)
    Abstract [en]

    The aim of this study was to evaluate periodic training for professional drivers, part 1 Eco-driving. The main objectives were: How has the training been conducted? Have the requirements of the regulations been met? and has the training program provided the participants with enough understanding of the subject? The study included two qualitative studies and one quantitative study. The qualitative studies used naturalistic observations and interviews. Seven vocational training courses were observed with the aid of an observation guide. The observer did not participate in the teaching. Interviews were conducted with instructors on the observed courses but also other actors who have a good knowledge of the training. The quantitative study consisted of a survey that 799 people (90 percent men) answered. Respondents were on average 44 years old. Most of those who participated in the survey were driving a truck.

  • 14.
    Forward, Sonja
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Gregersen, Nils Petter
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Nyberg, Jonna
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Stave, Christina
    Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Mopedungdomars trafiksäkerhet: föräldrars ansvar och engagemang2015Report (Other academic)
    Abstract [en]

    The overall aim of this study is to contribute to a better understanding of the importance of parents in young moped riders’ behaviour in traffic. The study consists of three parts; a literature review, a survey and an interview study. In the survey, 440 parents of teenagers (who had passed their test for mopeds) participated. In the interview study, 10 of the parents who took part in the survey were interviewed. The results from the literature review show that parents play an important role in young people’s perceptions, attitudes, norms, and behaviours associated with moped driving. Parents can also get involved in different ways to help in improving their teenagers’ knowledge and behaviour in traffic. In general, the review show that parents need support in order to be able to take control, and they also need support from other parents. The main results of the survey show that parents have great faith in the teenager when it comes to their knowledge and behaviour in traffic. In general, the results show that moped driving is not a topic being discussed very much. Some parents have implemented restrictions and the most common ones are related to alcohol and the usage of a helmet. In this study, less than ten percent wanted some form of support from others. Those who need help do not to the same extent as the others, believe that their teenager behave properly in traffic and they also believe that they are more influenced by social media. The study also found that the perception of boys and girls differ. Girls are considered to be safer on the roads but despite this, they have more restrictions placed on them than boys. Even if women value the teen’s knowledge and behaviour in traffic higher than men, they also have imposed more restrictions. In the family, women are talking more about risks in traffic than men are. The results from the interview study show that very few parents are in need of support when it comes to their children’s moped use. More detailed analyses of the interviews, however, reveals that parents would appreciate various forms of assistance, such as written information, training and/or information sessions as well as Internet-based parental forums. Implications of the current finding for the development of methods to increase parental commitment and engagement are presented.

  • 15.
    Forward, Sonja
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Digitalt utbildningsprotokoll: en pilotstudie av ett verktyg vid privat övningskörning2019Report (Other academic)
    Abstract [en]

    Statistics from the Swedish Road Transport Administration show that less than half of learner drivers pass their driving test. An important explanation for this is that a large proportion of learner drivers who fail their test do not prepare sufficiently for the test. Researchers and professional driver trainers have therefore looked for new solutions and tools which can improve the educational process. A desired effect would be for more people to pass their driving test and thus shorten the waiting times for the test itself.

    The Swedish National Association of Driver Trainers (STR) therefore wondered if a digital education protocol (DUP) could help in reducing the number of re-takes. Thereafter, the development of the protocol started. Firstly, through discussions in a workshop with stakeholders and key persons and then through interviews with supervisors, driver trainer and researchers. In the final DUP, 15 training blocks were included, where text, images and films explained and described an exercise based on the objectives of the national curriculum. Either the private supervisor or the driver trainer could approve a teaching ‘block’, when its goal was considered to be fulfilled.

    In order to establish how DUP has been introduced at driving schools, how it has been used and if it has resulted in fewer re-takes, a ‘process evaluation’ and a before and after study were conducted. Methods used were surveys and a register, which was updated every time a private supervisor reported that they wanted to participate in the pilot study. The driving schools were responsible for recruiting supervisors during their introductory training. Recruitment started late autumn 2015 and lasted until autumn 2017 when more than 350 supervisors took part in the study. According to the register, there were very few participants who, at the beginning of 2017, had approved any of the blocks. In order to find out why a short survey was distributed to the group. The results showed that the large majority had not started to drive with the students, but there were also some who had technical problems. As a result of this evaluation the manual was revised, and information material was produced, which the driving schools could use in connection with supervisors' introductory training. One year later when the recruitment of new supervisors stopped and 369 had registered, a new web survey was sent out.

    This survey measured the effect of DUP but also how it had been used. The response rate was rather low, about 10 percent. Of the responses from 47 supervisors, it appeared that half of them had not noticed the material in the DUP. The main reason for this was that they had forgotten that they had registered an interest in participating, that they had not started to practice driving with their students or that they had changed their minds and no longer wanted to use the tool. Of those who had used the DUP, one third said that the DUP was a great support for them. The tool was used as a source of inspiration but there were only a few who also had approved any of the blocks which would indicate that it was completed. The reasons were, among other things, that the supervisor was unable to use it for technical reasons, that the block was not completed and/or that they saw no point in it. Fourteen percent of the supervisors who answered the survey considered that the DUP should become mandatory for private driver training. While several gave positive feedback on the DUP, some supervisors described the technical problems that had occurred. Some of the supervisors argued that it should be adapted to the mobile phone. The result from this pilot study did not find any significant difference between the groups who used it or those who did not when it came to how many ‘re-tests’ the learner driver had to take before getting his/her license.

    The conclusion from this project is that a training protocol, i.e. DUP, can be helpful for supervisors but that further actions are needed to increase its use. Technically, it needs to be easier to use, no matter which application is being used. Since some considered that the manual was enough, the content should be reviewed and offer such things that a printed manual cannot offer as easily. For example, feedback and links to movies. However, those who participated in this pilot project cannot be considered representative, since the number of ‘re-tests’ was considerably smaller and the number of privately reported tests was virtually non-existent. This means that further actions are needed to attract the group that might be most in need of the support that a DUP can provide. For instance, making DUP a mandatory requirement, which means that DUP must be included in the education. In addition, it is suggested that all blocks must be approved, either by the supervisor or a driver trainer, before a learner driver can registered for the driving test. In order to further strengthen the value of DUP, we recommend that the use of DUP is done in consultation with a driver trainer and that it becomes much clearer that both supervisors and teachers can approve parts.

  • 16.
    Forward, Sonja
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Nyberg, Jonna
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Berg, Jessica
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Utvärdering av en ny obligatorisk riskutbildning för motorcyklister2011Report (Other academic)
    Abstract [en]

    On 1 November 2009 a new risk education program for all students learning to ride a motorbike was introduced in order to enhance their perception of risk. The training is both theoretical and practical. The aim of the study is to evaluate if motorcyclists' perception of risk changed as a consequence of the new training program. The study used a internet survey and two different groups were compared: motorcyclist learner drivers who had completed their training before the implementation of the new program and those who had completed their training after the 1st of November 2009. In the study 1,472 people participated (before study=541; after study=931). The mean age was 30 years and the proportion of women was 20 procent. The results showed relatively small changes in the motorcyclists' attitudes, norms and intentions before and after the new training program. However, the difference was mainly in the "right" direction which indicated a greater understanding of risk. Some negative changes were also observed but most frequently amongst the youngest age group (16-20 years old). These negative changes were related to their perception of speeding, alcohol, fatigue and of their own ability to drive a motorbike if compared with other motorcyclists. In conclusion, the results suggest that further research in this area is needed which looks at the effect of training but also the content and how training is being conducted with regard to methods used and how specific groups are being targeted. Implications of the current findings for the development of educational programs for motorcyclists are discussed.

  • 17.
    Forward, Sonja
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Nyberg, Jonna
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Forsberg, Inger
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Effekten av de nya reglerna för AM-behörighet (moped klass I): en för- och efterstudie2012Report (Other academic)
    Abstract [en]

    A Class I moped license (AM) to drive a Class I moped (“EU moped”), that included a practical and theoretical course, was introduced on 1 October 2009. The aim of this study was perform a before and after study in order to assess the effects of this new driver training course. The survey was based on two theories: the theory of planned behaviour and the prototype willingness model. A further aim of this study was to describe the way in which young people regard risks and the factors that affect their actions. The participants in this study were 15-–24 years of age; 901 in the before study and 946 in the after study. The results indicated fairly small differences before and after the new regulation. The attitude towards driving at a speed of 65 km/h in an urban area showed that people in the after study were less inclined to believe that their friends would drive at a speed of 65 km/h in an urban area, and that they did not feel as safe at a speed of 65 km/h as at 45 km/h. The significant differences noted for statements linked to the alcohol scenario were that mopedists in the follow-up study were less concerned about being stopped by the police or having a traffic accident. From a traffic safety viewpoint, the results were less favourable in this case. Overall, the new AM training programme was well received – the young people considered it positive, and ment that they had learned a lot. What they had learned consisted primarily of traffic rules and regulations. The results from the prototype willingness model showed that respondents who wanted to speed or drink and drive were more likely than others to consider that such persons were cool, confident and clever. A model which was based on the two theories was tested. The results indicated that the model explained 52 per cent of their willingness to exceed speed limits and 19 per cent of their readiness to ride home from the party.

  • 18.
    Forward, Sonja
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Patten, Christopher
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    En utvärdering av den obligatoriska riskutbildningen för motorcyklister2018Report (Other academic)
    Abstract [en]

    On 1 November 2009 a compulsory risk education program for all students learning to ride a motorbike was introduced, in order to enhance their perception of risk. The education consists of two parts: Part 1 is theoretical and part 2 practical. The year after the introduction a study was conducted by VTI with the aim of evaluating if motorcyclists’ perception of risk has changed as a consequence of risk education. The purpose of the present study is to replicate the previous one that was carried out after the new rules were introduced to see if the education has become more effective and to see if there are still some shortcomings. Unlike the study published in 2011, which only consisted of a survey, the latter study also included observations and interviews with professionals.

  • 19.
    Forward, Sonja
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Lindgren, Hanna
    Swedish National Road and Transport Research Institute, Society, environment and transport, Transport economics.
    Stave, Christina
    Swedish National Road and Transport Research Institute, Traffic and road users, Driver and vehicle.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Nyberg, Jonna
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Effekterna av begränsat antal handledarskap: en utvärdering2018Report (Other academic)
    Abstract [en]

    Formerly, a private driving tutor could have an unlimited number of approvals, but new regulations limit the number to 15. The overall purpose of this study is to determine whether this limit on the number of approvals for practice driving a private tutor can have has had any effect on unlawful driving school operations. Another important aim is to offer suggestions for alternative measures to curtail such activity in the driver’s training field. We have taken three approaches to addressing these issues, i.e.: a register study, an interview study, and a survey study. The results of the interview study indicate that, regarding illegal driving school activities, a host of services are available for purchase: falsified tutoring permits, private driving instructions, written examinations filmed on site and that others can access, help to pass the theoretical test by providing the correct answers via an earpiece and booking the appointment for a driving test. According to the interviewees, the most common is to offer private driving tutoring in return for payment. Opinions vary as to the scope of such unlawful activities from minor to extremely extensive in scope. However, the results of the survey study offer indications that relatively extensive unlawful activities are taking place. As to whether the regulations had a positive or negative impact on the unlawful driving school activities, the interviewees were in relative agreement that the regulations had no effect whatsoever. The argument was that those currently engaged in the illegal driving schools, or at any rate the more serious offenders, are sophisticated enough that they would surely circumvent these regulations. Despite this some of them wanted further reductions, even though they did not believe that this reduction would suffice. For them it was important to clearly demonstrate that it is a private instruction and no a professional activity. In general terms, the study identified deficiencies in the current driving licence system that could undermine confidence that Swedish driving licences have been obtained legally. The report ends with 16 different measures which could curtail unlawful activity. This means that no single measure will solve the problem by itself.

  • 20.
    Forward, Sonja
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Nyberg, Jonna
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Gustafsson, Susanne
    NTF.
    Gregersen, Nils Petter
    NTF.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Den svenska förarutbildningen: dagsläge och framtidsutsikter2017Report (Other academic)
    Abstract [en]

    The overall aim of this study is to provide a deep and broad understanding of current practice of driver training. Based on the results of four in-depth studies, the project attempts to identify the need for improvement. Furthermore, and in order to improve driver training some essential actions will be presented. Several methods have been used to achieve this aim. The report starts with a literature review looking at various aspects which can influence young driver trainer’s ability to drive safely but also literature looking at deficiencies and needs for change. The following chapter presents accident statistics which includes current data on young drivers’ accident involvement and how this has changed in recent years. That is followed by a summary of statistics on driving license tests and retests. The project also includes an interview study in which eleven professionals were interviewed (politicians, government officials, researchers and representatives of driving schools and race tracks). The purpose of this study was to discuss their views on the current driver training in Sweden but also their own suggestions for change. Two surveys were then carried out. The first was aimed at new drivers of different ages about their driver training and the other was aimed at driving instructors. The general conclusion of this study is that the general discussion of driver training focuses too much on time and cost rather than quality which does not favour traffic safety. The recommendation is therefore that there is a need for a more fundamental change of driver training. To realise this, some of the teaching methods used need to be improved. These methods can then be applied to “risk education” and to the more general driver training. Other areas which are in need for improvement focus on; private practice and a closer contact with driving schools, enhancing the quality of compulsory training and introduce more parts, more frequent quality assurance of driving schools and increased supervision and collaboration between stakeholders, a development of driving licence testing and a better consensus between the objectives, content/process and driving test, a clearer division of responsibilities regarding research and development and a better coordination of the various elements of driver training. Finally, there is a need to highlight best practice which can only be done if evaluation becomes common practice.

  • 21.
    Forward, Sonja
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Nyberg, Jonna
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Förarprov för personbil: orsaker till den sjunkande godkännandegraden och förslag på åtgärder2016Report (Other academic)
    Abstract [en]

    This study had four objectives using both quantitative and qualitative methods: 1) to gather knowledge by means of a literature review of research, documented good examples, and proposals concerning ways of handling problems associated with retesting; 2) to examine, through two interview studies and one survey study, the reasons for the declining passing rate among those seeking class B driving licences; 3) to determine whether any specific groups of licence applicants have exhibited lower passing rates; and 4) to propose, based on the results, remedial measures to address the preparation and training of licence applicants before testing. In general, the results show that licence applicants who fail the tests many times lack the ability to assess their own abilities since they believe that they are well prepared. Even if the test then is harder than anticipated they do not feel that they had made any major mistakes, instead it is the examiner who was too strict. Therefore, they often scheduled their retests immediately after their unsuccessful attempts, meaning that some are unable to practice much or at all before the retest. Based on the results of this study, a number of remedial measures are suggested that could reduce the proportion of retests in the future.

  • 22.
    Gustafsson, Susanne
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    SMADIT: samverkan mot alkohol och droger i trafiken : utvärdering av utvecklingsfasen i Stockholms län 2005-20072007Report (Other academic)
    Abstract [sv]

    SMADIT - Cooperation against alcohol and drugs in traffic, is a project in Stockholm County in cooperation between the Swedish Road Administration, the Police Authority, Stockholm County Council, Stockholm County branch of the Swedish Association of Local Authorities, Stockholm City, the Parole and Probation Department of the Swedish Prison and Probation Service, and the County Administrative Board. The objective of SMADIT is to reduce the number of drink drivers and to give people with drink and drug problems an opportunity to deal with their problem. The project intends to develop more effective procedures so that drivers under the influence of alcohol and drugs, resident in Stockholm County (SMADIT customers) are offered a consultation within 24 hours regarding the opportunity to tackle their alcohol or drug dependency, i.e. they are given a SMADIT invitation. This report is an evaluation of part of the development phase in Stockholm County which took place during the period 2005-2007. Within the project there are activity goals, process goals and information goals. These have been evaluated using comprehensive statistics relating to the work and questionnaires to people active in the project. During the period April 2006-March 2007, 2,588 drivers under the influence of alcohol or drugs, resident in Stockholm County, were encountered. Three quarters of the SMADIT customers (1,728 people) received a SMADIT invitation. Of these, 12% were given a specialist assessment. This means that the overriding aim of SMADIT, that 10% of the drink drivers found who were given an invitation to contact with the service for the care & treatment of alcohol and/or drug addicts, should accept treatment or some other action for their dependency, has been reached.

  • 23.
    Hakamies-Blomqvist, Liisa
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Cohort effects in older drivers accident type distribution: Are older drivers as old as they used to be?2000Report (Other academic)
  • 24.
    Hakamies-Blomqvist, Liisa
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Anund, Anna
    Swedish National Road and Transport Research Institute.
    Sörensen, Gunilla
    Swedish National Road and Transport Research Institute.
    Fyrtiotalisterna som framtida äldre trafikanter2005Report (Other academic)
    Abstract [sv]

    A questionnaire was sent by post to a sample of holders of driving licenses

    who had been born in the year 1944. The questionnaire covered present travel

    habits, expectations regarding the future as older road users, and giving

    lifts to elderly people. By targeting this group, it is anticipated that a

    more correct picture can be obtained of such things as future travel patterns

    compared with the usual method of basing forecasts on today's elderly people.

    As regards present travel patterns, the results showed such things as a

    continuation of the unequal distribution of car driving between males and

    females, that the car dominated as a method of travel, and that the car was

    considered to be necessary more often by men than it was by women.

    Expectations regarding the future were captured by asking the respondent to

    imagine that he or she was 80 years old at the time of filling in the

    questionnaire, and indicating his or her view of the probability of various

    phenomena at that age. Most of the respondents anticipated a rather active

    and mobile old age ahead of them, and the degree of optimism increased with

    increased mileage driven annually. However, over one-third of the women

    considered that it was not at all probable that they would be driving a car

    at the age of 80. Almost half of the respondents gave lifts to older

    relatives and acquaintances regularly, typically up to four times a month.

  • 25.
    Hakamies-Blomqvist, Liisa
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Falkmer, Torbjörn
    Swedish National Road and Transport Research Institute.
    Role of the medical profession in Finland and in Sweden regarding aging and driving1998Report (Other academic)
  • 26.
    Hakamies-Blomqvist, Liisa
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Falkmer, Torbjörn
    Swedish National Road and Transport Research Institute.
    Lundberg, Catarina
    Trafikmedicinskt centrum, Huddinge sjukhus.
    Braekhus, Anne
    Norskt centrum för demensforskning, Ullevål sjukhus, Oslo .
    Körkortsdiagnostik i allmänläkares dagliga patientarbete med äldre: en jämförelse av svenska och finska allmänläkares aktiviteter, kunskaper och attityder1998Report (Other academic)
    Abstract [en]

    In Sweden and Finland, different methods are used for identifying elderly drivers who should not continue to drive a car for medical reasons. Although Swedish doctors are obliged to report unsuitable drivers, no medical examinations are required for extending a driving licence. In Finland, however, a driver aged 70 or over must produce a medical certificate together with a certificate of continued driving ability when renewing his licence. The main purpose of the survey was to investigate whether the Finnish system had led to doctors having greater knowledge of traffic medicine and a more active approach compared with doctors in the Swedish system, since all Finnish doctors come into contact with mandatory medical examinations for driving licences during the course of their training as well as in clinical work. A random sample of 3,000 Swedish and Finnish general practitioners was given a postal questionnaire concerning their activities, knowledge and attitudes in regard to car drivers aged 65 and over. The results showed that the differences in activity and attitudes between Swedish and Finnish doctors regarding elderly people and car driving were small. The Swedish doctors were somewhat more active, and knew more about dementia as a risk factor. The Finnish doctors, however, had greater confidence in their own capability to assess the driving ability of elderly patients. The Finnish system thus does not lead to more knowledgeable or active doctors, but can create a somewhat illusory self-confidence among doctors.

  • 27.
    Hakamies-Blomqvist, Liisa
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Lundberg, Catarina
    Östlund, Joakim
    Swedish National Road and Transport Research Institute.
    Strategisk kompensation och körbeteende hos äldre bilförare2001Report (Other academic)
    Abstract [en]

    The present study compared the driving behaviour of older (67+) drivers who either drove throughout the year or only during the summer season. 41 older subjects drove in VTI’s simulator in both winter and summer conditions, partly combining the driving task with a secondary task of visual detection. It was hypothesised that the groups would differ as to their driving behaviour and that any differences would be more pronounced during winter conditions. While the groups did differ with respect to stress experienced in traffic (more for those driving in summer only) and to cognitive status (only in males, lower for those driving in summer only), there were practically no differences in their driving behaviour. The conclusion is that the strategic limitation of driving exposure either had not affected their driving behaviour or that the differences were too subtle to be detected in a simulated driving situation.

  • 28.
    Hakamies-Blomqvist, Liisa
    et al.
    Swedish National Road and Transport Research Institute.
    Östlund, Joakim
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Heikkinen, Satu
    Swedish National Road and Transport Research Institute.
    Äldre bilförare i simulator: en valideringsstudie2000Report (Other academic)
    Abstract [sv]

    Syftet med denna studie var att granska simulatorns validitet för studier av körbeteende hos äldre (65+) bilförare. Äldre bilförare är det snabbast växande segmentet i förarpopulationen. I förhållande till fältstudier är en körsimulator fördelaktig så tillvida att den verkliga trafikens olycksrisk undviks och att beteendet i situationer som skulle innebära en oacceptabel risk i en fältstudie kan observeras och mätas. Dessutom har man har fullständig kontroll över den experimentella situationen. Nackdelen är att även de bästa simulatorerna inte kan producera en helt övertygande illusion av verklig bilkörning, vilket rimligen påverkar körbeteendet. I studien jämfördes hur äldre försökspersoner körde samma rutt med en instrumenterad bil i verklig trafik och med VTI:s simulator. Dessutom samlades intervju- och testdata. Resultaten visar att försökspersonerna körde i stort sätt på samma sätt i simulatorn som i den instrumenterade bilen. De viktigaste skillnaderna mellan simulator och mätbil var följande: 1. Medelhastigheten var lägre i simulatorn på 70-sträckor. 2. Försökspersonerna körde längre åt höger på vägbanan i simulatorn. 3. Variationen i hastighet, sidoläge och rattutslag var större i simulatorn. 4. Försökspersonerna bromsade betydligt oftare och hårdare i simulatorn. 5. Inlärningseffekter, såsom ökad hastighet och mindre variation i hastighet och sidoläge, uppträdde i betydligt större grad i simulatorn.

  • 29.
    Hammarström, Ulf
    et al.
    Swedish National Road and Transport Research Institute.
    Edwards, Henrik
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Validering och utvärdering av AUT/TRANSYT2000Report (Other (popular science, discussion, etc.))
    Abstract [sv]

    AUT är ett system för optimal styrning av samordnade

    trafiksignaler. Systemet har utvecklats för

    att kunna installeras i befintliga signalsystem utan

    krav på omfattande investeringar. AUT innehåller

    de modeller för effektberäkning som krävs för

    utvärdering. Sådana effektdata redovisas normalt

    av AUT tidplan för tidplan och dag för dag.

    En meningsfull utvärdering förutsätter validering.

    Validering har genomförts både genom att ur

    videoupptagningar genomföra detaljerade analyser på

    länknivå och genom att använda en mätbil.

    Ur videon utvärderades: länkflöden; matande delflöden;

    mättnadsflöden; stopp och fördröjning.

    Mätbilen användes för registrering av körförlopp och

    bränsleförbrukning. Efter justering för påvisade

    systematiska avvikelser avseende stopp och fördröjning

    har AUT bedömts, att inom försöksområdet,

    kunna ge representativa eller åtminstone inte

    överskattande beskrivningar av: stopp;

    fördröjning; olika avgaser och trafikantkostnader.

    Systemet ger initialt en betydande reduktion av både

    avgasutsläpp och övriga trafikantkostnader.

    Initialt har i försöksområdets korsningar

    avgasutsläppen reducerats med minst 10%. Den största

    reduktionen gäller kväveoxider, vilka under ett andra

    driftår skulle reduceras med ca 16%.

    Kostnadsreduktionen under andra året skulle bli drygt

    en miljon kr/korsning och år, vilket kan

    jämföras med en investering av maximalt 100 000 kr per

    korsning. Genom att AUT kan arbeta med

    befintlig signalutrustning kan befintliga påvisat

    gynnsamma signalfunktioner för trafiksäkerhet

    bibehållas.

  • 30.
    Hammarström, Ulf
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Indata till EMV-modellen, ett datorprogram för beräkning av avgasemissioner från vägtrafik: källredovisning1997Report (Other academic)
  • 31.
    Hammarström, Ulf
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Parkeringsformer och motorvärmare: underlag för att beskriva avgasutsläpp vid motorstart2000Report (Other academic)
  • 32.
    Hammarström, Ulf
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Reparationskostnader för bilar: Kalibrering av Världsbankens HDM-III-samband för svenska förhållanden1994Report (Other academic)
  • 33.
    Hammarström, Ulf
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Uppskattning av emissionsfaktorer och försämring för personbilar2000Report (Other academic)
  • 34.
    Hammarström, Ulf
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Jönsson, Henrik
    Swedish National Road and Transport Research Institute.
    Samordnade trafiksignaler, AUT1995Report (Other (popular science, discussion, etc.))
  • 35.
    Heikkinen, Satu
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Dukic, Tania
    Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Höye, Alena
    Transportøkonomiskt Instittut (TØI).
    Peters, Björn
    Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.
    Sagberg, Fridulv
    Transportøkonomiskt Instittut (TØI).
    Åtgärder för äldre bilförare: effekter på trafiksäkerhet och mobilitet2010Report (Other academic)
    Abstract [en]

    The report describes and evaluates traffic safety measures for older drivers in Norway. Firstly, a literature review with a focus on current resarch since the year 2000 gives an overall picture of existing measures. Secondly, a review of existing and possible self-evaluation tests is made. Thirdly, the literature review and the review of self-evalution tests forms the basis for evaluating the effects of measures on traffic safety, mobility, safe mobility and viability. Seven measures of action which could be implemented in Norway are presented.

    • The current Norwegian driving licence policy of mandatory medical certificates for car drivers 70 years old and older should be evaluated
    • The current Norwegian policy with restricted driving licences should be evaluated
    • Education and training for older drivers should continue and develop to increase the effects on safe mobility
    • Self-evaluation tests should be implemented step-by-step and their use should be evaluated
    • Dissemination of checklists and advice to older drivers to facilitate choosing a car beneficial to safe mobility should be stimulated
    • A separate signal phase for left turning vehicles in intersections regulated by traffic lights, possibly complemented by a separate lane should when possible be introduced
    • Complex intersections without traffic lights should when possible be turned into roundabouts
  • 36.
    Heikkinen, Satu
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Henriksson, Per
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Äldres resvanor: äldre trafikanter som heterogen grupp och framtida forskningsbehov2013Report (Other academic)
    Abstract [sv]

    Syftet med detta notat är att ge en översikt av viktiga forskningsresultat om äldres resmönster samt att diskutera och problematisera hur heterogeniteten beaktas i forskning om äldres resmönster. Sammanställningen av forskningsresultat har gjorts i två steg. För det första bygger översikten på ett antal avslutade och pågående projekt från år 2008 och framåt där VTI har medverkat. För det andra har riktade litteratursökningar gjorts. Tvärsnittsstudier har utgjort en viktig grund för att illustrera hur äldre åldersgrupper reser mindre än åldersgrupper i medelålder, detta gäller såväl genomsnittlig restid, reslängd och antal resor. Detta är ett stabilt mönster i flertalet industrialiserade länder. En viktig del i minskningen utgörs av en minskning i arbetsresor i de högre åldersgrupperna. Samtidigt är det viktigt att notera att tvärsnittstudierna också pekar på att det inte är alla restyper som minskar utan inköps-, service-resor och fritidsresor är fortsatt vanliga i äldre åldersgrupper nära pensionsåldern. Det är först i de allra högsta åldrarna som resorna blir något färre. Tvärsnittsstudier illustrerar också hur de äldre åldersgrupperna reser mindre än medelåldersgrupper när det gäller de flesta färdmedel. Ett viktigt undantag är gång. Gång uppvisar en U-formad kurva där yngre liksom äldre åldersgrupper går mer än grupper i medelåldern. Viktigt att notera är att resultaten i tvärsnittsstudier både är beroende av individuella åldrandeprocesser och samhällelig förändring. En central fråga i forskning om äldres resvanor berör också utveckling över tid vilket studeras i longitudinella studier. Även prognoser för framtiden är viktiga. Äldres resande har ökat över tid vilket framförallt handlar om ett ökat bilresande. Det sker också en förändring där både inköps- och serviceresor liksom fritidsresor har ökat. I notatet beskrivs också den aktuella forskningstrenden att beskriva heterogeniteten hos äldre trafikanter. Vi beskriver studier baserade på sociodemografiska variabler likväl som en trend att konstruera nya kategorier av äldre baserat på resmönster. Även en trend där fokus ligger på livsloppsrelaterade förändringar som inverkar på mobilitet snarare än kronologisk ålder per se beskrivs.

  • 37.
    Helmers, Gabriel
    et al.
    Swedish National Road and Transport Research Institute.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Hakamies-Blomqvist, Liisa
    Swedish National Road and Transport Research Institute.
    Trafikmiljö för äldre bilförare: analys och rekommendationer utifrån en litteraturstudie2004Report (Other academic)
    Abstract [sv]

    The report begins with a short description of the state of knowledge at

    present, and of the age-related functional impairments that affect car

    driving. Two explanatory models are described as to why accidents occur.

    After that, there is a discussion of what general principles should apply to

    simplify the task of driving. The main part of the report consists of a

    run-through of the research literature, focusing on the ability of older car

    drivers to observe and familiarise themselves in traffic. In that respect,

    results and conclusions/recommendations have been presented as regards how

    road junctions and roads should be designed, and how the design and location

    of signs, traffic signals and road markings should be executed in order that

    the requirements of older people may be satisfied. Because only the external

    traffic environment has been dealt with in this study, such things as vehicle

    design or intelligent transport systems (ITS) solutions in the vehicle itself

    are not discussed. In the concluding chapter, some design principles for

    roads and elements of the road environment are given, which can be read

    independently as the principles apply to all car drivers.

  • 38.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Förare med funktionshinder: en undersökning om anpassade bilar, körvanor och säkerhet2001Report (Other academic)
    Abstract [sv]

    Kunskapen om funktionshindrade förare har varit bristfällig. VTI genomförde

    därför föreliggande

    studie på uppdrag av Vägverket under år 1999. En enkät med frågor om förarens

    funktionsnedsättning, utrustningen i bilen, användningen av bilen, trygghet

    och

    eventuell olycksinblandning

    skickades till ett urval av ägare till bilar som enligt Centrala Bilregistret

    hade anpassade förarplatser. Resultatet bygger på svar från 793 personer.

    Det visade sig att förarna kände sig mycket trygga i trafiken och hade ett

    stort förtroende för den

    anpassade bilen. Den allra största delen av sträckan denna grupp förflyttade

    sig, skedde med bil

    (90%), vilket ger en bild av hur beroende gruppen är av bilen för att uppnå

    en självständig mobilitet.

    När det gällde olycks- och skaderisken, var skillnaderna jämfört med förare i

    allmänhet små.

    Ungefär en av tio hade varit inblandad i en trafikolycka (oftast mindre

    krockar med endast materiella skador som följd) som förare av den anpassade

    bilen. Några olyckor

    uppgavs bero på problem med anpassningen i bilen. Orsakerna kunde vara ovana

    vid reglagen, ej

    fullständigt individuellt anpassad utrustning eller utrustning som gick sönder

    .

    I rapporten har många kommentarer tagits med från de svarande. De handlar om

    förslag på åtgärder för att förbättra säkerheten, tillbud, p-platser m.m.

  • 39.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Parkeringsbeteenden och söktrafik: en pilotstudie1999Report (Other academic)
  • 40.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Personbilars parkeringstider uppdelat på startplats och tidpunkt1996Report (Other academic)
  • 41.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Personbilsresors längder och fördelningar i tid och rum1993Report (Other academic)
  • 42.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Simulatorsjuka - orsak, verkan och åtgärder: en kunskapsöversikt2009Report (Other academic)
    Abstract [sv]

    The knowledge overview deals with simulator sickness, for example, why it occurs, the symptoms, and what measures can alleviate the symptoms. Image systems which extend a long way sideways, 90º turns and rapid changes of speed are examples of factors which can give rise to simulator sickness. The effect of movement is less clear, positive effects and the lack of effects have both been observed. There are also individual differences, including sex and age, which can affect sensitivity to simulator sickness. By excluding tight bends, complex environments, start and stop situations in the scenarios, the frequency of simulator sickness is reduced. In short exposures, there is less risk of simulator sickness occurring. Repeated exposures can result in the trial participants getting used to the simulator environment. Also, persons who do not consider themselves to be at all sensitive as regards motion sickness can be affected by simulator sickness, for which reason, previous experience of motion sickness is not a good predictor of simulator sickness. Experience of simulator sickness in VTI's research simulator is summarised. The problems have been reduced, largely thanks to simulator design. Finally, relevant aspects are discussed as regards the planning of a study of simulator sickness in a VTI simulator.

  • 43.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Statistik över väderleksförhållanden1994Report (Other academic)
  • 44.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Uppskattning av fördröjning och avgasutsläpp i fyrvägskorsningar med olika regleringsformer speciellt fyrvägsstopp1992Report (Other academic)
  • 45.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Utvärdering av projektet Nationell samverkan mot alkohol och droger i trafiken enligt Skelleftemodellen: enkätundersökning2009Report (Other academic)
    Abstract [sv]

    A questionnaire survey has been conducted as part of the evaluation of the Joint National Action against Drunk and Drugged Drivers according to the Skellefte Model which the Swedish National Road and Transport Research Institute (VTI) has carried out at the request of the Swedish Road Administration. The questionnaire was aimed at individuals who deal with drunk drivers within the police or social services/addiction treatment systems. The objective was to describe how this work is organised within the respective organisations, how contacts with drunk drivers and the administrative process surrounding the forms have worked, and whether the model has required more resources in terms of person-hours than had been the case prior to the implementation of the model. Depending on the circumstances of the particular target group, the questionnaire was distributed either online or by mail. 452 of the 589 individuals within the police or social services/addiction treatment systems who were chosen to receive the questionnaire responded, giving a response frequency of 77%. Two versions of the questionnaire were prepared, although the bulk of it was the same for both target groups. Both police officers and individuals involved in social services/addiction treatment systems were asked to recall the most recent case they had handled in accordance with the Skellefte Model. Bearing that case in mind, the respondents were then asked to describe how the routines had worked.

  • 46.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Äldre deltagare i körsimulatorstudier: en kunskapsöversikt2007Report (Other academic)
    Abstract [sv]

    This research overview deals with simulator studies involving older participants, of about 65 years of age or older. The overview has been structured in accordance with the aims the studies referred to regarding simulator driving. In the driving simulator evaluations have been made of the benefit of various types of support systems for the driver, further driving behaviour has been investigated (in general and in particular situations when secondary tasks are carried out, etc.), as well as how the simulator functions as an instrument for assessing driving ability. As a rule, groups consisting of younger persons, and sometimes also older middle-aged persons, also participated in the studies, but often the interest has only been directed towards the performance of older drivers. Types of simulator vary: everything from advanced dynamic ones with half car bodies and sophisticated display systems similar to those that VTI has, to more basic, stationary ones, with one or more monitors for display, instrumentation and car seat. Few studies describe how simulators have been used for training or education of older people. Also, only a limited number of validation studies involving older people have been found. The problem of simulator sickness is discussed, too.

  • 47.
    Henriksson, Per
    Swedish National Road and Transport Research Institute.
    Årliga körsträckor skattade ur Bilprovningens databas1994Report (Other academic)
  • 48.
    Henriksson, Per
    et al.
    Swedish National Road and Transport Research Institute.
    Hakamies-Blomqvist, Liisa
    Swedish National Road and Transport Research Institute.
    Fler äldre bilförare i trafiken - färre olyckor per individ?2003Report (Other academic)
    Abstract [sv]

    Denna studie har undersökt om äldre (65-84 år) bilförares olycksutveckling

    till någon del skulle kunna förklaras med teorin att sällsynta företeelser är

    förknippade med högre risk jämfört med vanligt förekommande företeelser

    (enligt Smeeds lag). Vår hypotes var att då äldre bilförares närvaro i

    trafiken ökar (fler äldre med körkort, mer bilanvändning), ökar olyckorna

    inte i samma mån utan mindre än vad en motsvarande lineär ökning skulle

    innebära. Olycksmaterialet har hämtats från Vägverkets olycksregister och

    exponeringsdata av två typer har utnyttjats: dels självrapporterade

    bilkörningsfrekvenser i en årlig enkätstudie och dels statistik om

    körkortsinnehav. Separata analyser gjordes på samtliga olyckor respektive

    olyckor med personskador (lindrigt och svårt skadade samt döda) som följd.

    Anledningen till denna uppdelning var att ändrade rapporteringsrutiner

    medförde ett minskat antal rapporterade egendomsskadeolyckor. Under den

    period och på den del av vägnätet som studerades, 1983-99 respektive statliga

    vägar, ökade inte det totala antalet olyckor normerat till antingen per

    bilförare eller per körkortsinnehavare. Betraktar vi i stället olyckor med

    personskador som följd och därmed en mer enhetlig olycksserie, finner vi en

    tydlig minskning av olyckstalen per person mellan 1983 och 1999, både bland

    de äldre och i hela den undersökta förargruppen (18-84 år). För att eliminera

    effekter av en allmän olycksutveckling, relaterades utvecklingen av äldre

    bilförares risk med riskutvecklingen i hela förarpopulationen under åren

    1983-1999. Då analysen baserades på alla olyckor, hade de äldres

    olycksinblandning en minskande trend jämfört med hela förarpopulationen,

    oberoende av vilket exponeringsmått (körkortsinnehavare eller bilförare) som

    användes. Då analysen baserades på personskadeolyckor försvann denna trend.

    Slutsatsen blir att hypotesen fick visst stöd, eftersom ökningen av de äldres

    olyckor inte var i paritet med deras ökade exponering i trafiken. I

    verklighet är denna trend sannolikt ännu tydligare, eftersom de i analysen

    använda exponeringsmåtten, antalet körkortshavare och antalet bilförare, inte

    fångar upp de äldres mer frekventa bilkörning på individuell nivå. Samtidigt

    ger bortfallet av lindriga olyckor en skenbart fördelaktigare riskbild för de

    yngre förarna, eftersom äldreolyckor oftare är av allvarligare typ. I detta

    notat har, som ett biresultat, data även presenterats som beskriver

    utveckling av bilkörningen för andra grupper än äldre. Det visade sig t.ex.

    att antalet aktiva bilförare ökat stort i antal bland dem som snart inträder

    i pensionsåldern (55-64 år) och att antalet yngre förare (20-24 år) som ofta

    kör bil minskat kraftigt under perioden.

  • 49.
    Henriksson, Per
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Levin, Lena
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Willstrand, Tania
    Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.
    Peters, Björn
    Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.
    Challenging situations, self-reported driving habits and capacity among older drivers (70+) in Sweden: a questionnaire study2014Report (Other academic)
    Abstract [en]

    The aim of the survey study in Sweden was to investigate health issues, driving habits and use of a car. The researchers were also interested in which traffic situations were judged as difficult or dangerous, avoidance strategies adopted for such situations, type of car used, equipment (ADAS systems) and its frequency of use. Respondents were asked to report any accidents in the previous two years, and to self-estimate their cognitive functioning and driving ability. Target population: Persons born in 1941 or earlier (aged 70 years or more in the year 2011), living in the county of Västra Götaland in Sweden, holder of a driving licence for category B, passenger car and still driving. This resulted in a target group comprising 1,362 active drivers. The overall picture of an older driver emerging from this study is one who enjoys car driving, uses the car often and is not particularly occupied by thoughts about stopping driving. Possible bias in this picture of older drivers may be due to the fact that those most interested in car driving were also those most interested in the study and thus in answering the questionnaire. There are several “truths” about older drivers reported in the literature that are questionable in the light of the present study. It is sometimes said that older people drive old cars, but this phenomenon is not supported by the questionnaire data in our study. The changes in driving behaviour often attributed to ageing drivers, e.g. driving more slowly, less frequently and over shorter distances, are applicable in the case of about one-third of the drivers in the present study. Analyses of this study confirm that health status is not the only reason someone stops driving; being less confident/apprehensive in the context of car driving may result in driving cessation. Findings indicate that preventive action, such as retraining sessions or developing driver assistance systems, will have to be taken into account if the risk associated with certain situations is to be reduced.

  • 50.
    Henriksson, Per
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Loukopoulos, Peter
    Swedish National Road and Transport Research Institute, Society, environment and transport, Mobility, actors and planning processes.
    Wiklund, Mats
    Trafikanalys.
    Utvärdering av kurser för förare av sportmotorcyklar: kursdeltagarnas behållning och effekten på försäkringsrapporterade skador2011Report (Other academic)
    Abstract [en]

    VTI has evaluated further training courses offered by the Swedish Motorcyclists Association (SMC) to riders of super-sport motorcycles. This was done through two substudies. In the first study, a series of telephone interviews were performed with persons who participated in the courses in 2007. The aim with this qualitative part of the study was to identify what respondents recalled from their participation in the courses, what they learned from them, and how the aims of the course have been interpreted.

    The second study included a follow-up of insurance reported claims during the period 2007-2009. Two groups were compared: those who participated in SMC further training course and those who did not participate in any such course.

    From the interview study, it was found that the course structure, i.e. practical exercises interleaved with discussions, received largely positive comments. Riding a motorcycle on public roads was seen as significantly different to riding on a designated track or course, which is why not all aspects of the further training course were viewed as relevant for speeds and circumstances that arise in normal traffic conditions. Some suggestions for improvement dealt with greater individual feedback, use of video cameras, and distribution of printed course material in advance.

    According to the follow-up study of insurance reported claims, no significant difference existed between those who completed the course/courses and those who have not passed SMC further training course. Any traffic safety effect of the SMC's courses for sport motorcycle riders was thus not possible to detect by the available data material.

12 1 - 50 of 79
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf