Publications
Change search
CiteExportLink to record
Permanent link

Direct 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
Development of a method for detecting jerks in safety critical events
Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.
Lund University, Dept Technol & Soc, Lund, Sweden.
2012 (English)In: Accident Analysis and Prevention, ISSN 0001-4575, E-ISSN 1879-2057, Vol. 50, 9 p.83-91 p.Article in journal (Refereed) Published
Abstract [en]

A new method for detecting jerks in safety critical events, based on the characteristics of the braking caused by the driver in time critical situations, has been developed and evaluated in a small pilot test and also applied on a naturalistic driving study. A portable event data recorder, capable of measuring and recording acceleration profiles for a predetermined time period before and after the safety critical situation, has also been developed to ensure high data quality used to evaluate the proposed method. Thus, an analysis of the acceleration profile is possible during the entire braking event. The study involves analyses of acceleration profiles and different characteristics of the rate of change of the acceleration profiles, i.e. jerks, such as negative jerk, used in previous studies, and a peak-to-peak value of the jerk. The finding is that the proposed method provides a more distinct difference between critical and potentially critical events and thus may be an appropriate method used to detect safety critical events.

Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 50, 9 p.83-91 p.
Keyword [en]
Near miss, Braking, Event data recorder (road vehicle)
Keyword [sv]
Tillbud, Bromsning, Automatisk lagring av färddata (vägfordon)
National Category
Applied Psychology
Research subject
Road: Traffic safety and accidents, Road: Road user behaviour
Identifiers
URN: urn:nbn:se:vti:diva-5324DOI: 10.1016/j.aap.2012.03.032ISI: 000314191600011OAI: oai:DiVA.org:vti-5324DiVA: diva2:674157
Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2014-09-30Bibliographically approved
In thesis
1. The development of methods for detection and assessment of safety critical events in car driving
Open this publication in new window or tab >>The development of methods for detection and assessment of safety critical events in car driving
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Improving our knowledge of drivers’ behaviour, especially in hazardous situations is a key to understanding why accidents occur and how to improve safety on our roads. Crash surrogate measures have proven to be very useful in traffic safety analysis. As a valid crash surrogate measure shares the same logical chain of events as actual crashes, studying those events increases the opportunities to analyze external circumstances as well as events and driver behaviour preceding the crash. A new definition of crash surrogate measures is proposed, i.e. safety critical braking events: Situations (including crashes) that require a sudden, evasive manoeuvre to avoid a crash or to correct for unsafe acts performed by the driver himself/herself or by other road users. This thesis develops a method for detecting Safety CRItical Braking Events (SCRIBE) and evaluates against other methods mostly used in large naturalistic driving studies. The evaluation shows promising results in the success rates of detecting safety critical events. Further, a Method for estimating the SEverity of safety Critical events (M-SEC) involving more than one road user, is developed and evaluated. The method combines a measure of closeness-to-collision, or safety margins, with a measure of possible consequences based on the speed and mass of the involved road users. Besides, a comparison is made with the Traffic Conflict Technique. Evaluation of the method shows that the estimated severity using M-SEC enables comparison of safety critical events involving different types of road users and is not limited to comparisons between similar types of events. In addition, the estimations when using M-SEC seem to reflect the seriousness of the safety critical events.

Place, publisher, year, edition, pages
Lund: Lunds universitet. Tekniska högskolan. Teknik och samhälle. Trafik och väg, 2012. 72 p.
Series
Bulletin, ISSN 1653-1930 ; 277
Keyword
Near miss, Braking, Driving (veh), Driver, Behaviour, Tillbud, Bromsning, Fordonskörning, Förare, Beteende
National Category
Vehicle Engineering Applied Psychology
Research subject
Road: Traffic safety and accidents, Road: Road user behaviour
Identifiers
urn:nbn:se:vti:diva-5310 (URN)978-91-7473-368-6 (ISBN)
Public defence
2012-10-16, 16:54 (English)
Opponent
Supervisors
Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2014-09-30Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Bagdadi, Omar
By organisation
Human-vehicle-transport system interaction
In the same journal
Accident Analysis and Prevention
Applied Psychology

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 72 hits
CiteExportLink to record
Permanent link

Direct 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