An Optimization Method of Signal Control for a Four-leg Roundabout Based on the Single Release Method
ZUO Jun-zhong1,2, XU Liang-jie1, NI Long-he1
1. School of Transportation, Wuhan University of Technology, Wuhan Hubei 430063, China;
2. Urban Research Center, Fuzhou Planning Design & Research Institute, Fuzhou Fujian 350003, China
Abstract A single release method for four-leg roundabouts is proposed. To completely use the time and space resources of roundabouts from the aspects of adjacent entrances and T-type storage spaces of the circulating lane, two types of optimized single release signal control models for a four-leg roundabout are presented. The coordination of signal phase design on the two types of optimized control models is presented, the phase coordination calculation is described in detail, and the original cycle length model is improved. By comparing the delays of the two optimized signal control models, the applicable conditions for optimized signal control models are discussed. Finally, considering the Tanxi Road/Changhong Road Roundabout in Xiangcheng, Xiangyang, as an example, the effectiveness of the presented optimized control models is evaluated. Simulated results show that the traffic flow at this roundabout is improved when the optimization methods are applied.
ZUO Jun-zhong,XU Liang-jie,NI Long-he. An Optimization Method of Signal Control for a Four-leg Roundabout Based on the Single Release Method[J]. Journal of Highway and Transportation Research and Development, 2014, 8(1): 78-83.
[1] AL-MADANI H M N. Dynamic Vehicular Delay Comparison between a Police Controlled Roundabout and a Traffic Signal[J]. Transportation Research Part A:Policy and Practice, 2003, 37(8):681-688.
[2] FLANNERY A. Geometric Design and Safety Aspects of Roundabouts[J]. Transportation Research Record, 2007, 1751:76-81.
[3] YANG Xiao-guang, LI Xiu-gang, XUE Kun. A New Traffic Signal Control for Modern Roundabouts Method and Application[J]. IEEE Transactions on Intelligent Transportation Systems, 2004, 5(4):282-287.
[4] WANG Xin-hua. Optimal Control of Roundabout[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2009, 48(4):141-144. (in Chinese)
[5] ZHAO Jing, YU Xiao-fei, BAI Yu, et al. Comparison between Two Methods of Signal Design for Cross Roundabouts[J]. Journal of Changsha Communications University, 2008, 24(3):53-58, 89. (in Chinese)
[6] ZHANG Xiao-ning, DENG Jing-yuan. Study on Setting of Signal Phase of Intersection in Method of Each Phase for an Entrance[J]. Journal of Highway and Transportation Research and Development,2010, 27(8):87-90, 95. (in Chinese)
[7] GOKULAN B P, SRINIVASAN D. Distributed Geometric Fuzzy Multiagent Urban Traffic Signal Control[J].IEEE Transactions on Intelligent Transportation Systems, 2010, 11(3):714-727.
[8] XU Liang-jie, WANG Wei. Phase and Phase-sequence Optimization Model Based on Dynamic Ordinal Samples Cluster Algorithm[J]. Journal of Highway and Transportation Research and Development, 2006, 23(4):120-123, 127. (in Chinese)
[9] HU Pei-feng, YUAN Zhen-zhou. Research on Signal Control Scenario Selection in Intersections[J]. Urban Transport of China, 2006, 4(6):70-74. (in Chinese)
[10] PENG Guo-xiong, ZHANG Yang. Study of the Way of Setting Ripple Changes[J]. China Journal of Highway and Transport, 2001, 14(SI):61-64. (in Chinese)
[11] WANG Wei, GUO Xiu-cheng. Traffic Engineering[M]. 2nd ed. Nanjing:Southeast University Press, 2001. (in Chinese)
[12] SISIOPIKU V P, OH H U. Evaluation of Roundabout Performance Using SIDRA[J]. Journal of Transportation Engineering, 2001, 127(2):143-150.