The effect of road tunnel environment on car following behaviour
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 in...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2014
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| Online Access: | https://hdl.handle.net/10356/101980 http://hdl.handle.net/10220/19809 |
| _version_ | 1826124387440394240 |
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| author | Yeung, Jian Sheng Wong, Yiik Diew |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Yeung, Jian Sheng Wong, Yiik Diew |
| author_sort | Yeung, Jian Sheng |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T06:19:48Z |
| format | Journal Article |
| id | ntu-10356/101980 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:19:48Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1019802020-03-07T11:45:54Z The effect of road tunnel environment on car following behaviour Yeung, Jian Sheng Wong, Yiik Diew School of Civil and Environmental Engineering Centre for Infrastructure Systems DRNTU::Engineering::Civil engineering::Transportation 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. Accepted version 2014-06-18T05:10:47Z 2019-12-06T20:47:52Z 2014-06-18T05:10:47Z 2019-12-06T20:47:52Z 2014 2014 Journal Article Yeung, J. S., & Wong, Y. D. (2014). The effect of road tunnel environment on car following behaviour. Accident Analysis & Prevention, 70, 100-109. 0001-4575 https://hdl.handle.net/10356/101980 http://hdl.handle.net/10220/19809 10.1016/j.aap.2014.03.014 en Accident analysis & prevention © 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]. 26 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Civil engineering::Transportation Yeung, Jian Sheng Wong, Yiik Diew The effect of road tunnel environment on car following behaviour |
| title | The effect of road tunnel environment on car following behaviour |
| title_full | The effect of road tunnel environment on car following behaviour |
| title_fullStr | The effect of road tunnel environment on car following behaviour |
| title_full_unstemmed | The effect of road tunnel environment on car following behaviour |
| title_short | The effect of road tunnel environment on car following behaviour |
| title_sort | effect of road tunnel environment on car following behaviour |
| topic | DRNTU::Engineering::Civil engineering::Transportation |
| url | https://hdl.handle.net/10356/101980 http://hdl.handle.net/10220/19809 |
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