Traffic Wave Model for a Variety of Traffic Flow State

LI Peng-fei; LIU Xiao-ming; SHI Jian-jun

doi:10.3969/j.issn.0254-0037.2014.11.013

Journal of Beijing University of Technology > 2014 > 40(11): 1680-1686. > DOI: 10.3969/j.issn.0254-0037.2014.11.013

LI Peng-fei, LIU Xiao-ming, SHI Jian-jun. Traffic Wave Model for a Variety of Traffic Flow State[J]. Journal of Beijing University of Technology, 2014, 40(11): 1680-1686. DOI: 10.3969/j.issn.0254-0037.2014.11.013

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Traffic Wave Model for a Variety of Traffic Flow State

Key Laboratory of Traffic Engineering, Beijing University of Technology, Beijing 100124, China

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Received Date: November 24, 2013
Available Online: January 10, 2023

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Based on the physical mechanism of car-following and the kinematic characteristics of the traffic wave propagation, a kinematic model for the traffic wave was built, which accords with the reality and is applied to many types of traffic flow. Data were obtained by the video capture in the high building and vehicle trajectory extraction method. The model was validated by the survey data, and the velocity of the traffic wave propagation was calculated in start-wave and stop-wave. Compared with the measured data, the relative error between the two wave velocities obtained by the model and observation was about5%. The validity of the model was confirmed. The vehicle speed and the headway have different impacts on the traffic wave velocity through model analysis. The proposed model can provide a theoretical basis for the urban traffic bottleneck control.
- traffic flow,
- traffic wave,
- vehicle trajectory,
- kinematic model

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