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A new dynamic model for heterogeneous traffic flow |
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| Authors: | TQ Tang HJ Huang HY Shang |
| Institution: | a School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China b School of Economics and Management, Beijing University of Aeronautics and Astronautics, Beijing 100191, China c School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China d Institute of Transportation Engineering, Tsinghua University, Beijing 10084, China |
| Abstract: | Based on the property of heterogeneous traffic flow, we in this Letter present a new car-following model. Applying the relationship between the micro and macro variables, a new dynamic model for heterogeneous traffic flow is obtained. The fundamental diagram and the jam density of the heterogeneous traffic flow consisting of bus and car are studied under three different conditions: (1) without any restrictions, (2) under the action of the traffic control policy that restrains some private cars and (3) using bus to replace the private cars restrained by the traffic control policy. The numerical results show that our model can describe some qualitative properties of the heterogeneous traffic flow consisting of bus and car, which verifies that our model is reasonable. |
| Keywords: | Heterogeneous traffic flow Car-following behavior Dynamics model Simulation |
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