Title: Signal priority control method for emergency vehicles at intersections based on wireless communication technology

Authors: Gaili Xu; Jialin Yao

Addresses: School of Traffic and Transportation Engineering, Central South University, Railway Campus, Changsha, China ' School of Traffic and Transportation Engineering, Central South University, Railway Campus, Changsha, China

Abstract: In order to give priority to control emergency vehicle signals at intersections, a priority control method for emergency vehicle signals at intersections is proposed based on wireless communication technology. The setting method of vehicle detector and emergency vehicle detector is analysed, and the non-delay model of emergency vehicle passing through the intersection is established to solve the phase and green time problems of emergency vehicle. Combined with wireless communication technology, the determination process of priority signal of emergency vehicle under fixed cycle conditions is elaborated in detail. The experimental results show that the queuing time of the designed French ordinary cars is significantly shortened, the average number of stops can be ignored, and the average delay time is shorter than that of the traditional method. This provides theoretical and practical basis for further guaranteeing the implementation of urban emergency rescue green channel and enriching the content of urban emergency rescue decision support method.

Keywords: wireless communication technology; intersection; emergency vehicle; signal control.

DOI: 10.1504/IJICT.2023.129952

International Journal of Information and Communication Technology, 2023 Vol.22 No.3, pp.213 - 223

Received: 29 Dec 2020
Accepted: 05 Mar 2021
Published online: 03 Apr 2023 *

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