Car-following theory of steady-state traffic flow using time-to-collision |
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| Authors: | Sheng Jin Zhi-yi Huang Peng-fei Tao and Dian-hai Wang |
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| Institution: | [1]College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China [2]College of Traffic and Transportation, Jilin University, Changchun 130022, China |
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| Abstract: | The conventional car-following theory is based on the assumption that vehicles will travel along the center line of lanes.
However, according to the field survey data, in complex traffic conditions, a lateral separation between the leader and the
follower frequently occurs. Accordingly, by taking lateral separation into account, we redefined the equation of time-to-collision
(TTC) using visual angle information. Based on the stimulus-response framework, TTC was introduced into the basic General
Motors (GM) model as a stimulus, and a non-lane-based car-following model of steady-state traffic flow was developed. The
property of flow-density relationship was further investigated after integrating the proposed car-following model with different
parameters. The results imply that the property of steady-state traffic flow and the capacity of each lane are highly relevant
to the microscopic staggered car-following behavior, and the proposed model significantly enhances the practicality of the
human driving behavior model. |
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