A New One-Way Bandwidth-Based Traffic Signal Coordination Approach Based on Travel Speed Variations

Traffic signal coordination is a critical traffic control technique for urban arterial operations. In order to achieve the potential promised by arterial traffic signal coordination to smooth traffic progression, considerable efforts have also been devoted to the use of time-dependent and/or link-dependent travel speeds to maximize the coordinated green time and hence the bandwidth. However, the majority of current studies merely used the mean of travel speed, while the speed variance caused by the uncertainty of stochastic traffic conditions was seldom quantified and integrated. This paper presents a framework and detailed models to use the link-based travel speed means and variances for iteratively optimizing the signal timing parameters for one-way urban arterial coordination control, in which the link travel speed variance is considered as a core factor to refine the coordinated green time at non-critical intersections. The proposed method was evaluated through a comparison with the conventional bandwidth-based approach based on the traffic simulation. Evaluation results show that the proposed method can generate improved coordination of traffic signal timing parameters when compared to the conventional approach, without significantly compromising the benefits of the non-coordinated traffic movements.

• Supplemental Notes:
  • This paper was sponsored by TRB committee AHB25 Traffic Signal Systems.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • An, Chengchuan
  • Xia, Jingxin
  • Lu, Zhenbo
  • Huang, Wei
  • Nie, Qinghui
• Conference:
  • Transportation Research Board 94th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2015-1-11 to 2015-1-15
• Date: 2015

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 17p
• Monograph Title: TRB 94th Annual Meeting Compendium of Papers

Subject/Index Terms

• TRT Terms: Arterial highways; Bandwidth (Traffic signals); Optimization; Traffic signal control systems; Traffic signal timing; Traffic speed; Variance
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01557706
• Record Type: Publication
• Report/Paper Numbers: 15-3604
• Files: TRIS, TRB, ATRI
• Created Date: Mar 24 2015 3:34PM