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Speed reduction effects over distance of animal-vehicle collision countermeasures – a driving simulator study
Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science. Swedish National Road and Transport Research Institute (VTI), Linköping, Sweden.ORCID iD: 0000-0001-5322-9827
Department of Human Geography, Lund University, Sweden.
Swedish National Road and Transport Research Institute (VTI), Linköping (VTI), Sweden.
2018 (English)In: European Transport Research Review, ISSN 1867-0717, E-ISSN 1866-8887, Vol. 10, no 2, article id 40Article in journal (Refereed) Published
Abstract [en]

Purpose: This study examined if speed reduction effects from animal-vehicle collision (AVC) countermeasures are merely local or do extend to a wider area, and what implications the results have on road planning practice regarding AVCs.

Methods: Twenty-five drivers drove repeatedly on a 9-km long road stretch in a high-fidelity driving simulator. The development of vehicle speed in the surrounding of an automatic speed camera, a wildlife warning sign and a radio message, were investigated in a full factorial within-subject experiment. The factors wildlife fence (with/without) and forest (dense/open landscape) were also included.

Results: The radio warning message had the largest influence on vehicle speed with a speed reduction of 8 km/h that lasted beyond 1 km and 2 km after the implementation. Eighty-eight per cent of the drivers reported being made extra aware of AVC due to the radio message, which was also associated with stress, insecurity and unsafety. The warning sign reduced vehicle speed by 1.5 km/h, but speed reductions were not significantly reduced 1 km after the implementation. Only 8 % of the drivers felt insecure/unsafe after passing the wildlife warning sign, explaining its limited impact on speed. There were no main effects of the automatic speed camera on vehicle speed at longer distances after implementation.

Conclusions: We recommend that AVC countermeasures should be of various design, occur at various segments along the road, and preferably be adaptive and geo-localized to minimize habituation effects on drivers. 

Place, publisher, year, edition, pages
Springer Publishing Company, 2018. Vol. 10, no 2, article id 40
Keywords [en]
Accidents, AVC, Countermeasures, Mitigation measures, Planning, Traffic safety, Animals, Automobile simulators, Cameras, Highway planning, Radar countermeasures, Roads and streets, Vehicles, Driving simulator, Driving simulator study, Speed reduction, Subject experiment, Vehicle collisions, Warning messages, Speed
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:hj:diva-41488DOI: 10.1186/s12544-018-0314-8ISI: 000443839700002Scopus ID: 2-s2.0-85052734562OAI: oai:DiVA.org:hj-41488DiVA, id: diva2:1249196
Available from: 2018-09-18 Created: 2018-09-18 Last updated: 2018-09-20Bibliographically approved

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Jägerbrand, Annika K.

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