The role of traffic and environmental conditions in increasing accident risk

Satu Innamaa, Ilkka Norros, Eetu Pilli-Sihvola

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

To be able to manage traffic proactively, transport network managers should be able to identify different risk factors on the transport network and thus be able to predict the occurrence and likely consequences of incidents. The significance of different traffic and environmental conditions in increasing accident risk was studied by looking at registered accidents that happened on Ring road I of the Helsinki metropolitan area. It was found that the spatial accident distribution was far from uniform and showed some strong peaks at different locations - useful information in considering means for preventing accidents. Temporally, the annual distribution of accidents also showed some clear patterns (e.g. peaks in February and September-October). In addition, the rush hours between 3 p.m. and 5 p.m. had a higher risk of accidents than the morning rush hours. Surprisingly, the traffic density itself did not seem to affect the accident risk. Snowfall, ice and snow on the road, and poor visibility were also identified as risk factors.
Original languageEnglish
Title of host publicationTransport Research Arena (TRA) 2014 Proceedings
Number of pages10
Publication statusPublished - 2014
MoE publication typeA4 Article in a conference publication
EventTransport Research Arena 2014, TRA 2014 - Paris, France
Duration: 14 Apr 201417 Apr 2014

Conference

ConferenceTransport Research Arena 2014, TRA 2014
Abbreviated titleTRA2014
CountryFrance
CityParis
Period14/04/1417/04/14

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Keywords

  • proactive traffic management
  • accident risk
  • incident risk
  • incident prediction

Cite this

Innamaa, S., Norros, I., & Pilli-Sihvola, E. (2014). The role of traffic and environmental conditions in increasing accident risk. In Transport Research Arena (TRA) 2014 Proceedings