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Effectiveness and acceptability of milled rumble strips on rural two-lane roads in Sweden
Swedish National Road and Transport Research Institute, Traffic and road users, Trafiksäkerhet och trafiksystem, TST.ORCID iD: 0000-0002-9164-9221
Swedish National Road and Transport Research Institute, Traffic and road users, Trafikanttillstånd, TIL.ORCID iD: 0000-0002-4790-7094
2017 (English)In: European Transport Research Review, ISSN 1867-0717, E-ISSN 1866-8887, Vol. 9, no 2, 29Article in journal (Refereed) Published
Abstract [en]

Purpose: The study sought to estimate the effects of centreline milled rumble strips on rural two-lane roads in Sweden in a wide perspective. Traffic safety effects (i.e., fewer crashes and injuries), driver experience, and driver opinions of centreline milled rumble strip usage on rural roads are investigated.

Methods: To evaluate the traffic safety effects, an Empirical Bayes study comparing the outcome before and-after the introduction of rumble strips was conducted. This study is based on data from 2003–2012 from the Swedish national traffic accident database, STRADA. To capture driver experience and opinions about milled centreline rumble strips, focus groups and road-side interviews were performed.

Results: The results indicate a significant decrease in all types of severe injury crashes, a 20% (±13%) reduction in the number of fatalities and seriously injured people (all crash types) and a 27% (±18%) reduction in the number of fatalities and severely injured people in single-vehicle crashes. Participants in focus groups and road-side interviews generally favoured centreline rumble strips on rural roads, and up to 90% of the interviewed motorcyclists and commuters stated that the rumble strips would help improve traffic safety.

Conclusions: Rumble strips in the centre of two-lane rural roads are a countermeasure to help drivers who are unintentionally about to leave the lane, for example, due to sleepiness or inattention. Based on the results of this study, installing centreline milled rumble strips on two-lane rural roads 8–10 meters wide is a measure to consider to increase safety.

Place, publisher, year, edition, pages
Springer, 2017. Vol. 9, no 2, 29
Keyword [en]
Rumble strip, Median (road), Impact study, Accident rate, Driver, Attitude (psychol), Experience (human), Before and after study, Interview
National Category
Applied Psychology
Research subject
80 Road: Traffic safety and accidents, 841 Road: Road user behaviour
Identifiers
URN: urn:nbn:se:vti:diva-11878DOI: 10.1007/s12544-017-0244-xScopusID: 2-s2.0-85019378596OAI: oai:DiVA.org:vti-11878DiVA: diva2:1107179
Available from: 2017-06-09 Created: 2017-06-09 Last updated: 2017-06-09Bibliographically approved

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