American Society of Civil Engineers


An Optimal Timing Model for Signalized Roundabout Intersections


by Yuntao Chang, (School of Transportation Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, China. E-mail: crchanghp@163.com), Yu Bai, (School of Transportation Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, China), and Daniel(Jian) Sun, (School of Transportation Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, China)
Section: Transportation Management, Operation Technology and Systems, pp. 1307-1317, (doi:  http://dx.doi.org/10.1061/41127(382)141)

     Access full text
     Purchase Subscription
     Permissions for Reuse  

Document type: Conference Proceeding Paper
Part of: ICCTP 2010: Integrated Transportation Systems: Green, Intelligent, Reliable
Abstract: This paper presents a general signal control model for roundabout intersections. By studying the characteristics of signal control and vehicle movements occurring at roundabout intersections, the wave theory, along with the HCM2000 delay function, is employed to analyze the features of each part of the vehicle delay, respectively. By setting the objective function and constraints on timing split and phase sequence, the paper proposes a theoretical optimal timing model for roundabout intersections based on the traditional dual ring control pattern. Finally, a case study was provided to illustrate the effect of the model with numerical results indicating that the proposed optimal timing model is capable to produce satisfying timing splits.


ASCE Subject Headings:
Time factors
Traffic signals
Intersections