The mixing of multi-mode connected and automated vehicles (CAVs) and multi-type human driving vehicles (HV) will become increasingly common. This study aims to establish a fundamental diagram that can accurately describe the heterogeneous traffic flows with CAVs and HVs. First, the traffic flow fundamental diagram of multi-type HVs is modeled based on the field data, and traffic flow parameters are calibrated; secondly, considering the difference of driving behaviors, the influence of CAVs mixed with HVs on the traffic flow characteristics is analyzed to establish the heterogeneous fundamental diagram; then, the credibility of the proposed fundamental diagram are verified by microscopic traffic simulation; finally, the sensitivity analysis of the penetration rate and driving behavior of CAVs are conducted. The results show the driving behavior of CAVs has a significant impact on traffic flow characteristics, while the increase of CAV penetration rate improves the roadway capacity.
Heterogeneous Traffic Flow Fundamental Diagram in Connected and Automated Environment
22nd COTA International Conference of Transportation Professionals ; 2022 ; Changsha, Hunan Province, China
CICTP 2022 ; 389-400
2022-09-08
Conference paper
Electronic Resource
English
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