dc.contributor.authorYeung, Jian Sheng
dc.contributor.authorWong, Yiik Diew
dc.identifier.citationYeung, J. S., & Wong, Y. D. (2014). The effect of road tunnel environment on car following behaviour. Accident Analysis & Prevention, 70, 100-109.en_US
dc.description.abstractIn 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.en_US
dc.format.extent26 p.en_US
dc.relation.ispartofseriesAccident analysis & preventionen_US
dc.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: http://dx.doi.org/10.1016/j.aap.2014.03.014].en_US
dc.subjectDRNTU::Engineering::Civil engineering::Transportation
dc.titleThe effect of road tunnel environment on car following behaviouren_US
dc.typeJournal Article
dc.contributor.researchCentre for Infrastructure Systemsen_US
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.description.versionAccepted versionen_US

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