Integrated Optimization of Vehicle Trajectories and Traffic Signal Timings

Hao Chen, Hesham Ahmed Rakha

2023

Abstract

This research develops a bi-level optimizer that provides energy-optimal control for vehicles and traffic signals. The first level optimizes the traffic signal timings to minimize the total energy consumption of approaching vehicles. The traffic signal optimization can be easily implemented in real-time traffic signal controllers and overcomes the shortcomings of the traditional Webster method, which overestimates the cycle length when the traffic volume-to-capacity ratio exceeds 50 percent. The lower-level optimizer is the vehicle speed controller, which calculates the optimal vehicle brake and throttle levels to minimize the energy consumption of individual vehicles. The proposed integrated controller is first tested on an isolated signalized intersection, and then on an arterial network with multiple signalized intersections to investigate the performance of the proposed controller under various traffic demand levels. The test results demonstrate that the proposed integrated controller can greatly improve energy efficiency producing fuel savings of up to 17.7%. It can also enhance traffic mobility by reducing traffic delays by up to a 47.2% and reducing vehicle stops by up to 24.8%.

Paper Citation

in Harvard Style

Chen H. and Ahmed Rakha H. (2023). Integrated Optimization of Vehicle Trajectories and Traffic Signal Timings. In Proceedings of the 9th International Conference on Vehicle Technology and Intelligent Transport Systems - Volume 1: VEHITS, ISBN 978-989-758-652-1, SciTePress, pages 27-34. DOI: 10.5220/0011709900003479

in Bibtex Style

@conference{vehits23,
author={Hao Chen and Hesham Ahmed Rakha},
title={Integrated Optimization of Vehicle Trajectories and Traffic Signal Timings},
booktitle={Proceedings of the 9th International Conference on Vehicle Technology and Intelligent Transport Systems - Volume 1: VEHITS,},
year={2023},
pages={27-34},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011709900003479},
isbn={978-989-758-652-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 9th International Conference on Vehicle Technology and Intelligent Transport Systems - Volume 1: VEHITS,
TI - Integrated Optimization of Vehicle Trajectories and Traffic Signal Timings
SN - 978-989-758-652-1
AU - Chen H.
AU - Ahmed Rakha H.
PY - 2023
SP - 27
EP - 34
DO - 10.5220/0011709900003479
PB - SciTePress