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Automotive Engineering ›› 2024, Vol. 46 ›› Issue (2): 241-252.doi: 10.19562/j.chinasae.qcgc.2024.02.006

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Multi-lane Trajectory Optimization for Intelligent Connected Vehicles in Urban Road Network

Pangwei Wang1,Cheng Liu1,Yunfeng Wang2(),Mingfang Zhang1   

  1. 1.North China University of Technology,Beijing Key Lab of Urban Intelligent Traffic Control Technology,Beijing  100144
    2.Research Institute of Highway Ministry of Transport,Key Laboratory of Operation Safety Technology on Transport Vehicles,Beijing  100088
  • Received:2023-06-14 Online:2024-02-25 Published:2024-02-23
  • Contact: Yunfeng Wang E-mail:wang.yf@rioh.cn

Abstract:

In order to improve the traffic efficiency and fuel utilization efficiency of intelligent connected vehicles (ICVs) under urban traffic networks, a multilane spatiotemporal trajectory optimization method is proposed in this paper. Firstly, the state and constraints of the ICVs are defined based on the multi-lane spatiotemporal position relationship and the compound optimization model of spatiotemporal trajectory is constructed by considering the traffic efficiency and fuel economy, which is solved by the Pontryagin Maximum algorithm. Furthermore, the rules of cooperative lane change are designed to obtain the optimal lane change strategy by Q-learning algorithm. Finally, the SUMO/Python co-simulation tests show that the method can effectively improve the traffic efficiency under different vehicle saturation levels, split allocation, and minimum traffic speed conditions, with great improvement of fuel efficiency.

Key words: intelligent connected vehicles, multi-lane trajectory optimization, Q-learning, urban traffic network, SUMO/Python co-simulation