期刊
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
卷 406, 期 -, 页码 287-297出版社
ELSEVIER
DOI: 10.1016/j.physa.2014.03.068
关键词
CA model; Pedestrian-vehicle interference; Heterogeneity; Power law distribution
资金
- National Natural Science Foundation of China [71101102, 71271150]
Mixed traffic without signal control is complicated. This paper proposes a pedestrian-vehicle cellular automata (CA) model to study the characteristics of the mixed traffic. The model includes two sub models. One is the pedestrian model, in which the heterogeneity is taken into consideration. The other is the vehicle model, in which a safely running mode and a normally running mode are introduced. Simulation results show that (1) the traffic flow experiences four phases, that is, free flow, pedestrians-free flow, vehicles-free flow and jams, (2) pedestrians cross the crosswalk in groups and the sizes of the groups obey power law distribution, and (3) the heterogeneity of pedestrians acts an important role in the system. If the pedestrians are simultaneously homogeneous, the mixed traffic flow shows a polarization and these power-laws disappear under high arrival rates of vehicles and pedestrians. (C) 2014 Elsevier B.V. All rights reserved.
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