Chapter
Apr 26, 2012
Relationship between Weaving Length and Traffic Safety in Road Interchanges
Authors: Yuan Xu [email protected], Shunying Zhu [email protected], Hong Wang, Juxiang Guan, Qinmei Sun, Bing Liu, Dan Liu, Jing Xia, and Constantinos Antoniou [email protected]Author Affiliations
Publication: Transportation and Development Innovative Best Practices 2008
Abstract
Weaving areas in road interchanges are dynamic areas, where vehicles change lanes frequently to complete merging and diverging operations in a short distance. As a result, traffic flow is rather unpredictable and volatile, with negative impact on the safety and efficiency of the entire interchange. This paper studies the impact of weaving length on traffic safety and efficiency. An orthogonal experimental design is developed in order to analyze the relationship between traffic conflicts and (i) weaving length, (ii) traffic volume and (iii) ratio of weaving volume to mainline flow. A microscopic simulation model, VISSIM, is used to model the Youyi Avenue interchange of Wuhan Changjiang River Tunnel and extract the selected as the traffic safety indices for each scenario, i.e. traffic conflicts and conflict velocity. Finally, a reasonable weaving length for the interchange that balances traffic safety and efficiency is estimated using the difference analysis method.
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Published In
Transportation and Development Innovative Best Practices 2008
Pages: 240 - 245
Copyright
© 2008 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Engineering fundamentals
- Highway and road management
- Highway transportation
- Highways and roads
- Infrastructure
- Interchanges
- Models (by type)
- Simulation models
- Traffic analysis
- Traffic engineering
- Traffic flow
- Traffic management
- Traffic models
- Traffic safety
- Traffic volume
- Transportation engineering
- Water transportation
Authors
Affiliations
Master Student, Dept. of Traffic Engineering, Wuhan University of Technology, 1040 Heping Ave., Wuchang, Wuhan, Hubei, China. 430063.E-mail: [email protected]
Professor, Dept. of Traffic Engineering, Wuhan University of Technology, 1040 Heping Ave., Wuchang, Wuhan, Hubei, China. 430063.E-mail: [email protected]
Hong Wang
Professor, Dept. of Traffic Engineering, Wuhan University of Technology, 1040 Heping Ave., Wuchang, Wuhan, Hubei, China. 430063
Juxiang Guan
Master Student, Dept. of Traffic Engineering, Wuhan University of Technology, 1040 Heping Ave., Wuchang, Wuhan, Hubei, China. 430063
Qinmei Sun
Master Student, Dept. of Traffic Engineering, Wuhan University of Technology, 1040 Heping Ave., Wuchang, Wuhan, Hubei, China. 430063
Bing Liu
Master Student, Dept. of Traffic Engineering, Wuhan University of Technology, 1040 Heping Ave., Wuchang, Wuhan, Hubei, China. 430063
Dan Liu
Master Student, Dept. of Traffic Engineering, Wuhan University of Technology, 1040 Heping Ave., Wuchang, Wuhan, Hubei, China. 430063
Jing Xia
Master Student, Dept. of Traffic Engineering, Wuhan University of Technology, 1040 Heping Ave., Wuchang, Wuhan, Hubei, China. 430063
Research Associate, Dept. of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge 02139.E-mail: [email protected]
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