Citation

Zhong LD, Sun XD, Chen YS, He YL, Zhang J. Beijing Gongye Daxue Xuebao 2007; 33(1): 37-40.

Affiliation

Beijing Key Lab. of Traffic Engineering, Beijing University of Technology, Beijing 100022, China

Copyright

(Copyright © 2007, Beijing University of Technology)

DOI

unavailable

PMID

unavailable

Abstract

The author clarified the relationship between volume to capacity ratio (V/C) and crash rate using three years crash and traffic flow data of a freeway. This relationship can be used as a basic reference to predict and prevent traffic accidents. The hourly crash rate model, having an independent variable of hourly V/C, was established by regression analysis, and the relationship between crash rate and V/C ratio represented by a U-shaped curve. The crash rate is the highest in the low hourly V/C range, decreases with an increasing V/C ratio, and then increases as the V/C ratio increases. When the V/C is 0.58, the crash rate is the lowest.