@article{ref1,
title="Crash analysis of Chinese freeway tunnel groups using a five-zone analytic approach",
journal="Tunnelling and underground space technology",
year="2018",
author="Wang, Jie and Pervez, Amjad and Wang, Zhengwu and Han, Chunyang and Hu, Lanye and Huang, Helai",
volume="82",
number="",
pages="358-365",
abstract="For mountainous freeways, some tunnels are situated adjacent to each other resulting in the tunnel group. This study aims to investigate the characteristics of traffic crashes in freeway tunnel groups. A typical mountainous freeway with tunnel groups in China is studied using police-reported crash data. A five-zone approach is proposed for safety analysis of tunnel groups. The result shows that the connection zone has the highest crash rate. Interior entrance zone has a significantly higher proportion of crashes during the daytime compared with other four zones, while the exit impact zone is associated with a higher proportion of crashes during the nighttime. This indicates that crashes are more likely to occur when a vehicle moves from bright to dark environments. <br><br>FINDINGS in this study shed some light on the engineering and policy implications for raising traffic safety of freeway tunnel groups.<p /> <p>Language: en</p>",
language="en",
issn="0886-7798",
doi="10.1016/j.tust.2018.08.037",
url="http://dx.doi.org/10.1016/j.tust.2018.08.037"
}