@article{ref1,
title="Research on the Relationship Between V/C and Crash Rate on Freeway",
journal="Beijing Gongye Daxue Xuebao",
year="2007",
author="Zhong, LD and Sun, XD and Chen, Y-S and He, Y. L. and Zhang, Jian",
volume="33",
number="1",
pages="37-40",
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.<p />",
language="",
issn="0254-0037",
doi="",
url="http://dx.doi.org/"
}