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Weather Conditions, Weather Information and Car Crashes

Finnish Meteorological Institute, P.O: Box 503, Helsinki 00101, Finland
Author to whom correspondence should be addressed.
Academic Editors: Christoph Aubrecht and Wolfgang Kainz
ISPRS Int. J. Geo-Inf. 2015, 4(4), 2681-2703;
Received: 11 June 2015 / Revised: 2 November 2015 / Accepted: 9 November 2015 / Published: 27 November 2015
(This article belongs to the Special Issue Geoinformation for Disaster Risk Management)
Road traffic safety is the result of a complex interaction of factors, and causes behind road vehicle crashes require different measures to reduce their impacts. This study assesses how strongly the variation in daily winter crash rates associates with weather conditions in Finland. This is done by illustrating trends and spatiotemporal variation in the crash rates, by showing how a GIS application can evidence the association between temporary rises in regional crash rates and the occurrence of bad weather, and with a regression model on crash rate sensitivity to adverse weather conditions. The analysis indicates that a base rate of crashes depending on non-weather factors exists, and some combinations of extreme weather conditions are able to substantially push up crash rates on days with bad weather. Some spatial causation factors, such as variation of geophysical characteristics causing systematic differences in the distributions of weather variables, exist. Yet, even in winter, non-spatial factors are normally more significant. GIS data can support optimal deployment of rescue services and enhance in-depth quantitative analysis by helping to identify the most appropriate spatial and temporal resolutions. However, the supportive role of GIS should not be inferred as existence of highly significant spatial causation. View Full-Text
Keywords: responsiveness; road vehicle crashes; traffic safety; early warning; weather conditions responsiveness; road vehicle crashes; traffic safety; early warning; weather conditions
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MDPI and ACS Style

Perrels, A.; Votsis, A.; Nurmi, V.; Pilli-Sihvola, K. Weather Conditions, Weather Information and Car Crashes. ISPRS Int. J. Geo-Inf. 2015, 4, 2681-2703.

AMA Style

Perrels A, Votsis A, Nurmi V, Pilli-Sihvola K. Weather Conditions, Weather Information and Car Crashes. ISPRS International Journal of Geo-Information. 2015; 4(4):2681-2703.

Chicago/Turabian Style

Perrels, Adriaan, Athanasios Votsis, Väinö Nurmi, and Karoliina Pilli-Sihvola. 2015. "Weather Conditions, Weather Information and Car Crashes" ISPRS International Journal of Geo-Information 4, no. 4: 2681-2703.

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