Effect of road structure on the capacity of a signalized road intersection
Pan Jia-Xiu(盘佳秀)a), Xue Yu(薛郁)a)b)†, Liang Yu-Juan(梁玉娟)a), and Tang Tie-Qiao(唐铁桥)c)
a Institute of Physics Science and Engineering, Guangxi University, Nanning 530004, China; b Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China; c School of Automobile Engineering, Beijing University of Astronautics and Aeronautics, Beijing 100083, China
Abstract In this paper, we use the stochastic Nagel--Schreckenberg (NaSch) model to investigate the influence of a special right-turning lane connecting two main roads on the capacity of a signalized road intersection. It is found that the magnitude of right-turning traffic flow and the linking position of the special right-turning lane can greatly influence the capacity of the signalized road intersection. The relation between traffic flow and entering probability for different distances between the entrance (exit) of the special right-turning lane and the road intersection is simulated and analysed. The corresponding spatiotemporal pattern and phase diagram on different sections of the main road are given under the condition of close proximity to the signalized road intersection, stop-and-go traffic occur and obstruct the intersection. On the contrary, unchanged flux is maintained as the distance exceeds a critical values. All the studies indicate that setting a special right-turning lane by choosing a suitable location near a signalized road intersection can relieve the load of current traffic on the main road and maintain traffic flow.
Received: 16 February 2009
Revised: 14 March 2009
Accepted manuscript online:
PACS:
45.70.Vn
(Granular models of complex systems; traffic flow)
Fund: Project supported by the National
Basic Research Program of China (Grant No
2006CB705500), the National Natural Science Foundation of China
(Grant Nos 10662002, 10865001 and 10532060), the Special Foundation
for the New Century Talents Program of Guangxi
Cite this article:
Pan Jia-Xiu(盘佳秀), Xue Yu(薛郁), Liang Yu-Juan(梁玉娟), and Tang Tie-Qiao(唐铁桥) Effect of road structure on the capacity of a signalized road intersection 2009 Chin. Phys. B 18 4169
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