Evaluating the Characteristics of Mixed Traffic at Signalized Intersection Based on the Degree of Order

This paper focuses on an evaluation of the characteristics of the mixed traffic between the "Pedestrians and Bicycles (P&B)" and the vehicles at signalized intersections using the concept of the degree of order. The degree of order describes the conflicts in both space and time, and the P&B at signalized intersections is modeled as a combined unit so as to describe the mixed traffic characteristics. During the first stage of the green interval, P&B moves in groups and the concept of "P&B conglomeration" is newly defined in this study. The speeds of bicycles and vehicles in a P&B conglomeration are different. Based on the two-phase flow theory of the hydromechanics, the reduced speed of the P&B conglomeration is modeled. The model of conflict time between the P&B conglomeration and the vehicles at signalized intersections is then proposed based on the method of ¡°suppositional grids.¡± A novel definition of the degree of order of mixed traffic at signalized intersections is proposed. The degree of order is modeled after the time-space resource theory. One signalized intersection in Beijing is chosen for the case study and the degree of order is applied to evaluate the mixed traffic characteristics under different signal control strategies. The result of the analysis can be used to add a new evaluation measure for operations of signalized intersection with mix traffic.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Jinguang, Liu
  • Quan, Yu
  • Yunlong, Zhang
  • Jian, Rong
  • Xiaoming, Liu
• Conference:
  • Transportation Research Board 89th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2010-1-10 to 2010-1-14
• Date: 2010

Language

• English

Media Info

• Media Type: DVD
• Features: Figures; Photos; References; Tables;
• Pagination: 14p
• Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

• TRT Terms: Bicycle travel; Cyclists; Green interval (Traffic signal cycle); Highway operations; Pedestrian movement; Pedestrian traffic; Signalized intersections; Traffic conflicts; Vehicle mix
• Subject Areas: Highways; Operations and Traffic Management; Pedestrians and Bicyclists; I73: Traffic Control;

Filing Info

• Accession Number: 01154496
• Record Type: Publication
• Report/Paper Numbers: 10-1849
• Files: TRIS, TRB
• Created Date: Apr 14 2010 7:14AM