Highlights Speed harmonization algorithm for mixed CV/CAV freeway traffic. Real-time traffic data from road side sensors, CVs and CAVs. Consideration of throughput, speed variations, fuel consumption, and safety measures. Yielding much smoother trajectories for not only CAVs but also other vehicles.
Abstract Emerging connected autonomous vehicles (CAV) technologies provide an opportunity to the detailed vehicle trajectory control to reduce adverse impacts of stop-and-go traffic imposed by freeway bottlenecks. This study proposes a CAV-based trajectory-smoothing concept to harmonize traffic, improve fuel-efficiency and reduce environmental impacts. The presented algorithm is applicable to mixed-traffic environments with human-driven vehicles (HVs), connected vehicles (CVs), and CAVs. This algorithm controls CAVs so that they smoothly hedge against the backward deceleration waves and gradually merge into the downstream traffic with a reasonable speed. This model addresses the full spectrum of CV and CAV market penetration rates and various traffic conditions. Numerical experiments are performed to assess the algorithm performance with different traffic conditions and CV and CAV market penetration rates. The results show significant improvements in dampening traffic oscillation and reducing fuel consumption and emissions.
A mixed traffic speed harmonization model with connected autonomous vehicles
Tramsportation Research, Part C: Emerging Technologies ; 104 ; 210-233
2019-05-02
24 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Transportation Research Record | 2023
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