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Open AccessArticle

An Intersection Signal Control Mechanism Assisted by Vehicular Ad Hoc Networks

1
Department of Computer, North China Electric Power University, Baoding 071003, China
2
Institute of Information Science, Beijing Jiaotong University, Beijing 100044, China
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(12), 1402; https://doi.org/10.3390/electronics8121402
Received: 23 October 2019 / Revised: 20 November 2019 / Accepted: 21 November 2019 / Published: 25 November 2019
The urban intersection signal decision-making in traditional control methods are mostly based on the vehicle information within an intersection area. The far vehicles that have not reached the intersection area are not taken into account, which results in incomplete information and even incorrectness in decision-making. This paper presents an intersection signal control mechanism assisted by far vehicle information. Using the aid of real-time information collection for far vehicles through vehicular ad hoc networks (VANETs), we can consider them together and calculate the accumulative waiting time for each intersection traffic flow at a future moment to make the optimal signal decision. Simulation results show that, under three different traffic flow environments—same even traffic flows, same uneven traffic flows, and different traffic flows—the two proposed implementation schemes based on the mechanism (fixed phase and period timing improvement scheme, and dynamic phase and period control scheme) show good performances, in which the average waiting time and the ratio of long-waiting vehicles are both less than the results of the traditional signal timing scheme. Especially, in the second scheme, the waiting time was reduced by an average of 38.6% and the ratio of long-waiting vehicles was reduced by an average of 7.67%. View Full-Text
Keywords: Intelligent transportation; signal control; waiting time; far vehicle; VANETs Intelligent transportation; signal control; waiting time; far vehicle; VANETs
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MDPI and ACS Style

Cai, Z.; Deng, Z.; Li, J.; Zhang, J.; Liang, M. An Intersection Signal Control Mechanism Assisted by Vehicular Ad Hoc Networks. Electronics 2019, 8, 1402.

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