In this work, the problem of path planning for an autonomous vehicle that moves on a freeway is considered. The most common approaches that are used to address this problem are based on optimal control methods, which make assumptions about the model of the environment and the system dynamics. On the contrary, this work proposes the development of a driving policy based on reinforcement learning. In this way, the proposed driving policy makes minimal or no assumptions about the environment, since a priori knowledge about the system dynamics is not required. Driving scenarios where the road is occupied both by autonomous and manual driving vehicles are considered. To the best of the authors’ knowledge, this is one of the first approaches that propose a reinforcement learning driving policy for mixed driving environments. The derived reinforcement learning policy, firstly, is compared against an optimal policy derived via dynamic programming, and, secondly, its efficiency is evaluated under realistic scenarios generated by the established SUMO microscopic traffic flow simulator. Finally, some initial results regarding the effect of autonomous vehicles’ behaviour on the overall traffic flow are presented.
Deep reinforcement-learning-based driving policy for autonomous road vehicles
IET Intelligent Transport Systems ; 14 , 1 ; 13-24
2019-11-07
12 pages
Article (Journal)
Electronic Resource
English
road vehicles , deep reinforcement-learning-based , dynamic programming , autonomous vehicle , driving scenarios , system dynamics , derived reinforcement learning policy , learning (artificial intelligence) , driving policy , optimal control , autonomous vehicles , autonomous road vehicles , optimal control methods , path planning , road traffic , traffic engineering computing , manual driving vehicles , mixed driving environments , optimal policy , autonomous driving vehicles , driver information systems
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