Analyzing Bicycle–Car Mixed Traffic Flow by Social Force Model for Collision Risk Evaluation

Based on the interaction mechanization of vehicles and the basic hypothesis of social force model, a dynamics model of bicycle-car mixed flow has been established. The bicycles and cars are affected by the inner and outer forces, by which almost all of the traffic actions of the bicycles and cars have been affected synchronously, and the inner forces derive from the drivers’ or cyclists’ desire of moving with the best velocity while the outer forces derive from the affection of the other traffic units and the borders of the road. The inner and outer forces which the bicycles and cars have been affected are analyzed quantitatively. By the probability of the sudden braking, while the bicycles and cars flow in a urban road section has been simulated, the traffic collision risk of the bicycle-car traffic flow has been analyzed, from which the authors come to the conclusion that the risk of the bicycles and cars potential collision increase while the traffic density becomes high. For the bicycle-car mixed traffic flow, with the motor vehicle traffic density decreasing, the velocity and the probability of the bicycles driving into the motor vehicle lane will increase, and the probability of the traffic accident between the bicycles, which rides into the motor vehicle lane, and the motor vehicle with a high speed will sharply increase. When bicycle’s density remains constant, the probability that bicycles may run into vehicle lane decreases with the increase of cars’ density due to the mutual interference between motor vehicles get stronger, therefore the risk of vehicle’s crash are becoming higher, which is mainly due to the aggravated interference be-tween motor vehicles.

• Record URL:
  • http://onlinepubs.trb.org/onlinepubs/conferences/2011/RSS/1/Li,M.pdf
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• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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  Transportation Research Board

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• Authors:
  • Li, Maosheng
  • Shi, Feng
  • Chen, Dafei
• Conference:
  • 3rd International Conference on Road Safety and Simulation
  • Location: Indianapolis Indiana, United States
  • Date: 2011-9-14 to 2011-9-16
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: 22p
• Monograph Title: 3rd International Conference on Road Safety and Simulation

Subject/Index Terms

• TRT Terms: Bicycles; Braking; Crashes; Simulation; Traffic density; Traffic flow; Vehicle mix
• Subject Areas: Highways; Pedestrians and Bicyclists; Safety and Human Factors; I80: Accident Studies;

Filing Info

• Accession Number: 01504441
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Jan 24 2014 2:29PM