01024982

English

http://dx.doi.org/10.3141/1948-18

Winter weather conditions play a significant role in the operation of the surface transportation system, including heightening safety risks for motorists. Previous research has sought to correlate winter weather severity with maintenance costs through the use of indices, although few have been developed to relate winter weather parameters to safety. This paper summarizes a research project using data from California, Montana, and Oregon to quantify relationships between winter weather and safety. Many model forms were reviewed, and then linear models were developed to predict the cubic root of the crash rate as a function of weather parameters. Models were developed for different topographic zones and on a statewide level, with correlations ranging from 0.12 to 0.67. These models were used to develop indices that may be used for traveler information purposes. The indices show promise for application in traveler information and winter maintenance; therefore, recommendations for research are included.

HRIS

Print

pp 161-169

01031686

2006

Transportation Research Record: Journal of the Transportation Research Board

0309099579

Figures (4) ; References (11) ; Tables (3)

Accident rates; California; Correlation analysis; Highway safety; Mathematical models; Montana; Oregon; Road weather information systems; Weather conditions; Weather forecasting; Winter maintenance

Data and Information Technology; Highways; Maintenance and Preservation; Safety and Human Factors; I62: Winter Maintenance; I80: Accident Studies

Apr 27 2007 9:17AM

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