Cellular Automaton Modeling of the Interaction between Vehicles and Pedestrians at Signalized Crosswalk
Publication: Journal of Transportation Engineering
Volume 138, Issue 12
Abstract
Characteristics of mixed traffic on a road with a signalized crosswalk are investigated by cellular automaton modeling. The interaction mechanism between vehicles and pedestrians is taken into account. Also, the inordinate behavior of vehicles near the crosswalk, and various behaviors of three types of pedestrians (i.e., careful pedestrians, normal pedestrians, and riskers), are incorporated into the proposed model. By using numerical simulations, the case for pedestrian flow consisting of careful and normal pedestrians is investigated. Phase diagrams and spatiotemporal diagrams are presented to show different traffic states. The results show that there is a critical value that divides the vehicle flow into a free flow portion and a congested flow portion. Interestingly, there are two critical values for pedestrian flow for a large signal cycle value, whereas there is only one critical value when the signal cycle value is smaller than a critical value. Finally, the variation of violating frequency against time during a signal cycle is investigated. It is found that there are two local maximum values on the frequency curves when the pedestrians consist of all three types, and this phenomenon is coincident with the qualitatively real traffic.
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Acknowledgments
We appreciate Dr. Hongwei Guo for providing the real traffic data. This work is partially supported by the National Basic Research Program of China (973 Program) (Grant No. 2012CB725401), the National Natural Science Foundation of China under Project (Grant No. 71071012), the Fundamental Research Funds for the Central Universities (Grant Nos. 2012JBM065), and the Innovation Foundation of Science and Technology for Excellent Doctorial Candidate of Beijing Jiaotong University (Grant No. 141046522).
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 138 • Issue 12 • December 2012
Pages: 1442 - 1452
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Jun 3, 2011
Accepted: Jun 4, 2012
Published online: Aug 20, 2012
Published in print: Dec 1, 2012
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