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Best Practices for Road Weather Management Version 2.0

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Title:

Development of a Roadway Weather Severity Index

Abstract:

This paper summarizes a research project using data from California, Montana and Oregon to quantify relationships between winter weather and safety. After reviewing many model forms, the research team developed linear models 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 future application in traveler information and winter maintenance; therefore, recommendations for future research are included.

Source(s):

85th Transportation Research Board (TRB) Annual Meeting; Montana State University, Western Transportation Institute and University of Hawaii-Manoa

https://trid.trb.org/view.aspx?id=884621

Date: 2006

Author:

Strong, Shvetsov

Keywords:


Safety
Crashes

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