期刊
TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES
卷 69, 期 -, 页码 548-563出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.trc.2016.01.011
关键词
Speed advisory system; Connected vehicle; Optimal control; Traffic signals; Fuel consumption; Arterial traffic
资金
- BMW Information Technology Research Center in South Carolina
Connected Vehicles (CV) equipped with a Speed Advisory System (SAS) can obtain and utilize upcoming traffic signal information to manage their speed in advance, lower fuel consumption, and improve ride comfort by reducing idling at red lights. In this paper, a SAS for pre-timed traffic signals is proposed and the fuel minimal driving strategy is obtained as an analytical solution to a fuel consumption minimization problem. We show that the minimal fuel driving strategy may go against intuition of some people; in that it alternates between periods of maximum acceleration, engine shut down, and sometimes constant speed, known in optimal control as bang-singular-bang control. After presenting this analytical solution to the fuel minimization problem, we employ a sub-optimal solution such that drivability is not sacrificed and show fuel economy still improves significantly. Moreover this paper evaluates the influence of vehicles with SAS on the entire arterial traffic in micro-simulations. The results show that SAS-equipped vehicles not only improve their own fuel economy, but also benefit other conventional vehicles and the fleet fuel consumption decreases with the increment of percentage of SAS-equipped vehicles. We show that this improvement in fuel economy is achieved with a little compromise in average traffic flow and travel time. (C) 2016 Elsevier Ltd. All rights reserved.
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