Automated Lane Change Strategy using Proximal Policy Optimization-based Deep Reinforcement Learning

• URL: http://arxiv.org/abs/2002.02667v2
• Date: Wed, 20 May 2020 23:22:20 GMT
• Title: Automated Lane Change Strategy using Proximal Policy Optimization-based Deep Reinforcement Learning
• Authors: Fei Ye, Xuxin Cheng, Pin Wang, Ching-Yao Chan, Jiucai Zhang
• Abstract summary: Lane-change maneuvers are commonly executed by drivers to follow a certain routing plan, overtake a slower vehicle, adapt to a merging lane ahead, etc. In this study, we propose an automated lane change strategy using proximal policy optimization-based deep reinforcement learning. The trained agent is able to learn a smooth, safe, and efficient driving policy to make lane-change decisions.
• Score: 10.909595997847443
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Lane-change maneuvers are commonly executed by drivers to follow a certain routing plan, overtake a slower vehicle, adapt to a merging lane ahead, etc. However, improper lane change behaviors can be a major cause of traffic flow disruptions and even crashes. While many rule-based methods have been proposed to solve lane change problems for autonomous driving, they tend to exhibit limited performance due to the uncertainty and complexity of the driving environment. Machine learning-based methods offer an alternative approach, as Deep reinforcement learning (DRL) has shown promising success in many application domains including robotic manipulation, navigation, and playing video games. However, applying DRL to autonomous driving still faces many practical challenges in terms of slow learning rates, sample inefficiency, and safety concerns. In this study, we propose an automated lane change strategy using proximal policy optimization-based deep reinforcement learning, which shows great advantages in learning efficiency while still maintaining stable performance. The trained agent is able to learn a smooth, safe, and efficient driving policy to make lane-change decisions (i.e. when and how) in a challenging situation such as dense traffic scenarios. The effectiveness of the proposed policy is validated by using metrics of task success rate and collision rate. The simulation results demonstrate the lane change maneuvers can be efficiently learned and executed in a safe, smooth, and efficient manner.

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