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Title: The effect of road tunnel environment on car following behaviour
Authors: Yeung, Jian Sheng
Wong, Yiik Diew
Keywords: DRNTU::Engineering::Civil engineering::Transportation
Issue Date: 2014
Source: Yeung, J. S., & Wong, Y. D. (2014). The effect of road tunnel environment on car following behaviour. Accident Analysis & Prevention, 70, 100-109.
Series/Report no.: Accident analysis & prevention
Abstract: In order to overcome urban space constraints, underground road systems are becoming popular options for cities. Existing literature suggests that accident rates in road tunnels are lower than those in open roads. However, there is a lack of understanding in how the road tunnel environment affects inter-vehicle interactions. In this study, car following data are obtained from traffic video footages of open and tunnel expressways in Singapore. A total of 15,325 car following headways (with car as the follower) are analysed and significant factors affecting headways are found to be speed, and lane. Significant effect of leading vehicle type is only found for tunnel expressway. Headways are generally longer in the tunnel environment. Assessment of collision time measures and safety margins also reveal safer car following behaviour and lower rear–end collision risks in the tunnel expressway. The results are discussed from a behavioural perspective. Overall, the findings show that road tunnels are superior in terms of safety but at reduced traffic capacity.
ISSN: 0001-4575
DOI: 10.1016/j.aap.2014.03.014
Rights: © 2014 Elsevier Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Accident Analysis & Prevention, Elsevier Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI:].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

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