SHANDONG SCIENCE ›› 2017, Vol. 30 ›› Issue (2): 78-84.doi: 10.3976/j.issn.1002-4026.2017.02.012

• Tranfic and Transportation • Previous Articles     Next Articles

Optimization method of the improved F-B model based signal timing at oversaturated intersections

GAO Jia-ning,DING Yong*   

  1. School of Traffic and Transportation , Beijing Jiaotong University ,Beijing 100044,China
  • Received:2016-06-25 Online:2017-04-20 Published:2017-04-20

Abstract:

To reduce the vehicle delay time at oversaturated intersections, the improved F-B signal timing model was established. The procedures of cycle calculation in this model were the same as those in F-B method. The concept of “real traffic volume” was put forward when investigating the flow rate of each approach, and the delay model was used to evaluate the F-B method and the improved FB method. The case study indicated that, compared with the F-B signal timing model, the use of improved F-B model made the delay time of two neighboring intersections of Wenhua Road/Fushan Road and Wenhua Road/Hagongda Road decrease 34.39% and 28.05% respectively. The improved model can ease traffic jam effectively, and reduce vehicle queue length, and improve the intersection service level.

Key words: signal timing , real traffic volume, delay, traffic control

CLC Number: 

  • U491.5+4