Long-term trends in weather-related crash risks

This study explores whether automobile travel during inclement weather has become more or less risky over the past two decades. The analysis is based on the integration of two government databases and a matched-pair framework for comparing casualty rates under different weather conditions for 10 Canadian cities. The most notable result is a downward trend in relative risk during rainfall from 1984 to 2002 - both overall and when further disaggregated by injury severity combined with precipitation amount, city group, and time of day. By contrast, the overall relative risk of casualty during snowfall shows no significant change over time.

[1]  X. Chu.  Effects of changes in travel patterns on highway fatalities. , 1999, Accident; analysis and prevention.

[2]  H. Summala,et al.  Effects of weather and weather forecasts on driver behaviour , 2007 .

[3]  D. Eisenberg.  The mixed effects of precipitation on traffic crashes. , 2004, Accident; analysis and prevention.

[4]  Michael Kyte,et al.  Effect of Weather on Free-Flow Speed , 2001 .

[5]  John Whitelegg,et al.  Road safety: defeat, complicity and the bankruptcy of science , 1983 .

[6]  K. Knapp.  AN INVESTIGATION OF VOLUME, SAFETY, AND VEHICLE SPEEDS DURING WINTER STORM EVENTS , 2000 .

[7]  L. Fu,et al.  Effects of Winter Weather and Maintenance Treatments on Highway Safety , 2006 .

[8]  J. Andrey.  The automobile imperative: Risks of mobility and mobility‐related risks , 2008 .

[9]  Jean Andrey,et al.  Driver Response to Rainfall on Urban Expressways , 2006 .

[10]  K. Keay,et al.  The association of rainfall and other weather variables with road traffic volume in Melbourne, Australia. , 2005, Accident; analysis and prevention.

[11]  Frank A. Haight.  Why the per capita traffic fatality rate is falling , 1984 .

[12]  Julia B Edwards,et al.  Motorway speeds in wet weather: the comparative influence of porous and conventional asphalt surfacings , 2002 .

[13]  T. Maze,et al.  Whether Weather Matters to Traffic Demand, Traffic Safety, and Traffic Operations and Flow , 2006 .

[14]  V. Shankar,et al.  Marginal Impacts of Design, Traffic, Weather, and Related Interactions on Roadside Crashes , 2004 .

[15]  J. Andrey,et al.  Weather as a Chronic Hazard for Road Transportation in Canadian Cities , 2003 .

[16]  T. Golob,et al.  Relationships Among Urban Freeway Accidents, Traffic Flow, Weather and Lighting Conditions , 2001 .

[17]  P. Ramage-Morin.  Motor vehicle accident deaths, 1979 to 2004. , 2008, Health reports.

[18]  B M Sweedler,et al.  Worldwide Trends in Alcohol and Drug Impaired Driving , 2004, Traffic injury prevention.

[19]  D. Eisenberg,et al.  Effects of snowfalls on motor vehicle collisions, injuries, and fatalities. , 2005, American journal of public health.

[20]  S. Baker,et al.  Secular trends of motor vehicle mortality in the United States, 1910-1994. , 2001, Accident; analysis and prevention.

[21]  Joel Liesman,et al.  Estimating the relationship between measured wind speed and overturning truck crashes using a binary logit model. , 2007, Accident; analysis and prevention.

[22]  S Lassarre,et al.  Analysis of progress in road safety in ten European countries. , 2001, Accident; analysis and prevention.

[23]  M. Eriksson,et al.  Relationships between road slipperiness, traffic accident risk and winter road maintenance activity , 2000 .

[24]  Mircea-Paul Andreescu,et al.  Weather and traffic accidents in Montreal, Canada , 1998 .

[25]  K. Keay,et al.  Road accidents and rainfall in a large Australian city. , 2006, Accident; analysis and prevention.

[26]  Margaret M. Peden,et al.  World Report on Road Traffic Injury Prevention , 2004 .

[27]  Geert Wets,et al.  Studying the effect of weather conditions on daily crash counts using a discrete time-series model. , 2008, Accident; analysis and prevention.

[28]  J. C. Lessard,et al.  Transportation in Canada , 1956 .

[29]  Risto Kulmala,et al.  Effects of variable message signs for slippery road conditions on driving speed and headways , 2000 .

[30]  Y. Hassan,et al.  The impact of unseasonable or extreme weather on traffic activity within Lothian region, Scotland , 1999 .

[31]  Sandeep Datla,et al.  Impact of cold and snow on temporal and spatial variations of highway traffic volumes , 2008 .

[33]  Y Page,et al.  A statistical model to compare road mortality in OECD countries. , 2001, Accident; analysis and prevention.

[34]  David A Anderson,et al.  PROPOSED DESIGN GUIDELINES FOR REDUCING HYDROPLANING ON NEW AND REHABILITATED PAVEMENTS , 1999 .