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Identifying critical road geometry parameters affecting crash rate and crash type
Chalmers University of Technology.
Swedish National Road and Transport Research Institute, Traffic and road users, Traffic safety, society and road-user.
Chalmers University of Technology.
2011 (English)Conference paper, (Refereed)
Abstract [en]

The objective of this traffic safety investigation was to find critical road parameters affecting crash rate (CR). The study was based on crash and road maintenance data from Western Sweden. More than 3000 crashes, reported from 2000 to 2005 on median-separated roads, were collected and combined with road geometric and surface data. The statistical analysis showed variations in CR when road elements changed confirming that road characteristics affect CR. The findings indicated that large radii right-turn curves were more dangerous than left curves, in particular, during lane changing manoeuvres. However sharper curves are more dangerous in both left and right curves. Moreover, motorway carriageways with no or limited shoulders have the highest CR when compared to other carriageway widths, while one lane carriageway sections on 2+1 roads were the safest. Road surface results showed that both wheel rut depth and road roughness have negative impacts on traffic safety.

Place, publisher, year, edition, pages
Barrington: Association for the Advancement of Automotive Medicine , 2011. , 11 p.
Keyword [en]
Curve (road), Degree of curvature, Geometric design, Surfacing, Evenness, Rutting (wheel), Safety
Keyword [sv]
Kurvor, Krökning, Vägutformning, Beläggningar, Jämnhet, Spårbildning, Säkerhet
National Category
Infrastructure Engineering
Research subject
Road: Traffic safety and accidents, Road: Geometric design and traffic safety; Road: Highway design, Road: Surfacing
Identifiers
URN: urn:nbn:se:vti:diva-5199OAI: oai:DiVA.org:vti-5199DiVA: diva2:674029
Conference
Association for the Advancement of Automotive Medicine (AAAM), 53rd Annual Meeting - October 4-7, 2009 - Baltimore
Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2014-09-18Bibliographically approved

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CiteExportLink to record
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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