Development of a signal-head-free intersection control logic in a fully connected and autonomous vehicle environment |
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| Affiliation: | 1. Department of Civil Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794, USA;2. Department of Civil and Environmental Engineering, Washington State University, Pullman, WA 99164, USA;1. 140 Civil Engineering Building, Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, 500 Pillsbury Drive SE, Minneapolis, MN 55455, United States;2. School of Civil and Environmental Engineering, UNSW Sydney, NSW 2052, Australia;1. School of Transportation and Logistics, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China;2. National Engineering Laboratory of Integrated Transportation Big Data Application Technology, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China;3. College of Transportation Engineering, Tongji University, Shanghai, 201804, China;1. Department of Civil and Environmental Engineering, University of Hawaii at Manoa, Honolulu, HI 96822, USA;2. Center for Urban Transportation Research, University of South Florida, Tampa, FL 33620, USA;3. Department of Civil and Environmental Engineering, University of Nevada, Reno, Reno, NV 89557, USA;1. Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, NC, USA;2. Department of Industrial and Systems Engineering, North Carolina State University, Raleigh, NC, USA |
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| Abstract: | Establishment of effective cooperation between vehicles and transportation infrastructure improves travel reliability in urban transportation networks. Lack of collaboration, however, exacerbates congestion due mainly to frequent stops at signalized intersections. It is beneficial to develop a control logic that collects basic safety message from approaching connected and autonomous vehicles and guarantees efficient intersection operations with safe and incident free vehicle maneuvers. In this paper, a signal-head-free intersection control logic is formulated into a dynamic programming model that aims to maximize the intersection throughput. A stochastic look-ahead technique is proposed based on Monte Carlo tree search algorithm to determine the near-optimal actions (i.e., acceleration rates) over time to prevent movement conflicts. Our numerical results confirm that the proposed technique can solve the problem efficiently and addresses the consequences of existing traffic signals. The proposed approach, while completely avoids incidents at intersections, significantly reduces travel time (ranging between 59.4% and 83.7% when compared to fixed-time and fully-actuated control strategies) at intersections under various demand patterns. |
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| Keywords: | Control logic Autonomous intersection control Monte Carlo tree search Look-ahead model Connected and autonomous vehicles Dynamic programming |
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