Analysis of Single-Vehicle Run-Off-the-Road Accidents on Rural Four Lane or More Divided Highways in Texas.

摘要

The purpose of the study was to identify the single-vehicle run-off-the-road (SVROR) accident mitigation techniques that are currently in use in Texas, and to assist the Texas State Department of Transportation (TxDOT) highway engineer in identifying areas that may be susceptible to SVROR accidents. Using the accident records from the TxDOT from 1983 to 1990 to identify factors common to rural, four lane or more divided highway SVROR accidents, a prediction model equation was developed. The prediction modeling was useful in identifying the primary factors involved in rural, four lane or more divided highway SVROR accidents. A method of identifying locations susceptible to SVROR accidents was developed. Recommendations for selecting and using the different types of shoulder treatments with respect to different pavement surfaces and for the different climates were also made.