Stability analysis of traffic flow with extended CACC control models |
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| Affiliation: | 1.Faculty of Science, Ningbo University, Ningbo 315211, China;2.Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China;3.Department of Civil and Architectural Engineering, City University of Hong Kong, Kowloon, China;4.Jiangsu Key laboratory of Urban ITS, Southeast University, Nanjing 210096, China |
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| Abstract: | To further investigate car-following behaviors in the cooperative adaptive cruise control(CACC) strategy,a comprehensive control system which can handle three traffic conditions to guarantee driving efficiency and safety is designed by using three CACC models.In this control system,some vital comprehensive information,such as multiple preceding cars' speed differences and headway,variable safety distance(VSD) and time-delay effect on the traffic current and the jamming transition have been investigated via analytical or numerical methods.Local and string stability criterion for the velocity control(VC) model and gap control(GC) model are derived via linear stability theory.Numerical simulations are conducted to study the performance of the simulated traffic flow.The simulation results show that the VC model and GC model can improve driving efficiency and suppress traffic congestion. |
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| Keywords: | cooperative adaptive cruise control stability condition traffic flow variable safety distance |
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