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中南大学学报(英文版)

Journal of Central South University

Vol. 24    No. 2    February 2017

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Optimization of traffic signal parameters based on distribution of link travel time
LI Mao-sheng(黎茂盛), XUE Hong-li(薛红丽), SHI Feng(史峰)

School of Transportation and Traffic Engineering, Central South University, Changsha 410075, China

Abstract:In order to make full use of digital data, such as data extracted from electronic police video systems, and optimize intersection signal parameters, the theoretical distribution of the vehicle’s road travel time must first be determined. The intersection signal cycle and the green splits were optimized simultaneously, and the system total travel time was selected as the optimization goal. The distribution of the vehicle’s link travel time is the combined results of the flow composition, road marking, the form of control, and the driver’s driving habits. The method proposed has 15% lower system total stop delay and fewer total stops than the method of TRRL (Transport and Road Research Laboratory) in England and the method of ARRB (Australian Road Research Board) in Australia. This method can save 0.5% total travel time and will be easier to understand and test, which establishes a causal relationship between optimal results and specific forms of road segment management, such as speed limits.

 

Key words: travel time distribution; signalized intersection; signal cycle time; green split

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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