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Journal of Control Science and Engineering
Volume 2018, Article ID 1024382, 11 pages
Research Article

Route-Based Signal Preemption Control of Emergency Vehicle

School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China

Correspondence should be addressed to Haibo Mu; nc.utjzl.liam@mmmbhm

Received 30 October 2017; Accepted 20 February 2018; Published 1 April 2018

Academic Editor: Ai-Guo Wu

Copyright © 2018 Haibo Mu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper focuses on the signal preemption control of emergency vehicles (EV). A signal preemption control method based on route is proposed to reduce time delay of EV at intersections. According to the time at which EV is detected and the current phase of each intersection on the travelling route of EV, the calculation methods of the earliest start time and the latest start time of green light at each intersection are given. Consequently, the effective time range of green light at each intersection is determined in theory. A multiobjective programming model, whose objectives are the minimal residence time of EV at all intersections and the maximal passing numbers of general society vehicles, is presented. Finally, a simulation calculation is carried out. Calculation results indicate that, by adopting the signal preemption method based on route, the delay of EV is reduced and the number of society vehicles passing through the whole system is increased. The signal preemption control method of EV based on route can reduce the time delay of EV and improve the evacuation efficiency of the system.