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Heldragen kantlinje på tvåfältsväg: hastighet och synbarhet
Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.ORCID iD: 0000-0002-2061-5817
Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.
2014 (Swedish)Report (Other academic)Alternative title
Continuous edge line on Swedish two lane roads : speed and visibility (English)
Abstract [sv]

Syftet med studien var att undersöka hur heldragen respektive intermittent kantlinje påverkar reshastigheten på tvåfältsväg, samt att undersöka om det finns en skillnad i hållbarhet för de två linjetyperna. Studien genomfördes på en 4 km lång landsvägssträcka under en treårsperiod. Första året hade hela sträckan heldragen kantlinje. Under andra och tredje året hade halva sträckan heldragen kantlinje, medan den andra halvan hade intermittent kantlinje. Mätningar av reshastighet för fria (ostörda) personbilar gjordes varje år studien pågick, både i dagsljus och i mörker, i torrt väglag. Under andra och tredje året gjordes även mätningar av kantlinjernas funktion, i form av retroreflexion och luminanskoefficient. Resultaten visade att kantlinjens utformning inte påverkade reshastigheten, varken i dagsljus eller i mörker. Pre-view-time, det vill säga synbarhetsavståndet uttryckt i sekunder givet observatörens hastighet, var signifikant högre för heldragen än för intermittent kantlinje. Under de två år mätningar gjordes av kantlinjernas funktion kunde ingen skillnad i hållbarhet påvisas mellan de två linjetyperna. Utifrån ett trafiksäkerhets- och komfortperspektiv talar resultaten för användning av heldragen kantlinje på tvåfältsväg, åtminstone på kurviga och kuperade vägar.

Abstract [en]

The aim was to investigate whether travel speed on two lane roads is influenced by the type of edge line. Another aim was to investigate whether there is a difference in durability for different line types. The study was carried out on a rural road segment. In year one, the entire road segment had a continuous edge line. In year two and three, half the segment had a continuous edge line, while the other half had a broken edge line. Travel speed of free flow passenger cars was measured each year, both in daylight and at night. The function of the edge lines was measured in terms of retroreflection and luminance coefficient. The results showed that the type of edge line did not have an influence on travel speed, neither in daylight nor at night. The preview time was significantly higher for the continuous than for the broken edge line. No difference in durability between the two line types could be observed during the two years the study was carried out. From a traffic safety and comfort perspective, the results point toward the use of continuous edge lines on two lane roads, at least on hilly and curving roads.

Place, publisher, year, edition, pages
Linköping: VTI , 2014. , 31 p.
Series
VTI rapport, ISSN 0347-6030 ; 809
Keyword [en]
Solid line, Carriageway marking, Impact study, Speed, Visibility, Measurement, Daylight, Darkness, Driver, Behaviour
National Category
Applied Psychology
Research subject
Road: Traffic engineering, Road: Traffic control and traffic information
Identifiers
URN: urn:nbn:se:vti:diva-6827OAI: oai:DiVA.org:vti-6827DiVA: diva2:706551
Available from: 2014-03-20 Created: 2014-03-20 Last updated: 2016-02-25Bibliographically approved

Open Access in DiVA

fulltext(1989 kB)101 downloads
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Fors, CarinaLundkvist, Sven-Olof
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CiteExportLink to record
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