Chapter
Jul 2, 2019
Analysis of Unconventional Design for Signalized and Closely-Spaced T-Intersections
Authors: Xiaoning Wang [email protected], Li Song [email protected], Peijie Wu [email protected], and Siyuan Yu [email protected]Author Affiliations
Publication: CICTP 2019
Abstract
In order to increase the capacity and mitigate the traffic congestion at signalized and closely spaced T-intersections, an unconventional closely-spaced T-intersections design (UCTD) was proposed. Through setting back the main T-intersection’s left-turn conflict point to the adjacent T-intersection, there is no need to change the road’s land use or set additional pre-signals for the crossover segment. A two-phase scheme can be used in the main T-intersection for better performance of the heavy traffic flow. Micro simulation was developed to evaluate the UCTD’s performance. In one scenario, the UCTD resulted in a reduction of average delays by 64%, stops by 46%, average stop time by 72%, average queue length by 50%, maximum queue length by 55%, and fuel consumption and related emissions by 14% compared to conventional T-intersections. Also, results found that the UCTD is suitable when the main T-intersection’s traffic volume is much larger than that of the second one.
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© 2019 American Society of Civil Engineers.
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Published online: Jul 2, 2019
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Affiliations
School of Transportation Science and Engineering, Harbin Institute of Technology, P.R. China. E-mail: [email protected]
School of Transportation Science and Engineering, Harbin Institute of Technology, P.R. China. E-mail: [email protected]
School of Transportation Science and Engineering, Harbin Institute of Technology, P.R. China. E-mail: [email protected]
School of Transportation Science and Engineering, Harbin Institute of Technology, P.R. China. E-mail: [email protected]
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