Research on Dynamic Signal Control for Exclusive Right-Turn Lane at Mixed Traffic Flow Intersections

Traffic conflicts among right turn vehicle (RTV), non-motorized vehicle (NMV) and pedestrian were examined for urban signalized intersections with exclusive right turn lane. This study proposed an approach to dynamically calculating the duration of the prohibited right turn for vehicles by using a measure we call the Degree of Clustered Conflict, (DCC). The process of DCC control includes: 1) quantitatively calculating DCC value in conflict area; 2) establishing the general cost model that combines delay and conflict indicators; and 3) applying the DCC-control time model to control right turn vehicle in real time. Based on these, the paper presented a general approach of detailed dynamic on-line signal control process of RTV. Finally, the RTV control process was programmed based on VISSIM simulation to evaluate the control effectiveness. The results showed that the general cost (weighted summation of delay and conflict) of the RTV control decreases rapidly compared with non-control, fixed control and full control (drop 58%, 35% and 42% under small flow conditions and 70%, 59% and 17% in the large flow conditions, respectively). The method not only improved the operation efficiency, but also reduced the conflicts among traffic participants when vehicles turn right at intersections.

• 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:
  • Sun, Jian
  • Zhao, Li
  • Zhang, Yancong
  • Wu, Zhizhou
• Conference:
  • Transportation Research Board 92nd Annual Meeting
  • Location: Washington DC, United States
  • Date: 2013-1-13 to 2013-1-17
• Date: 2013

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 14p
• Monograph Title: TRB 92nd Annual Meeting Compendium of Papers

Subject/Index Terms

• TRT Terms: Nonmotorized transportation; Pedestrians; Right turn lanes; Signalized intersections; Traffic conflicts; Traffic flow; Traffic signal control systems
• Identifier Terms: VISSIM (Computer model)
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01476738
• Record Type: Publication
• Report/Paper Numbers: 13-3206
• Files: TRIS, TRB, ATRI
• Created Date: Mar 27 2013 9:36AM