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arXiv · 2109.13446

Runtime Safety Assurance for Learning-enabled Control of Autonomous Driving Vehicles

Shengduo Chen·Yaowei Sun·Dachuan Li·Qiang Wang·Qi Hao·Joseph Sifakis
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Abstract

Providing safety guarantees for Autonomous Vehicle (AV) systems with machine-learning-based controllers remains a challenging issue. In this work, we propose Simplex-Drive, a framework that can achieve runtime safety assurance for machine-learning enabled controllers of AVs. The proposed Simplex-Drive consists of an unverified Deep Reinforcement Learning (DRL)-based advanced controller (AC) that achieves desirable performance in complex scenarios, a Velocity-Obstacle (VO) based baseline safe controller (BC) with provably safety guarantees, and a verified mode management unit that monitors the operation status and switches the control authority between AC and BC based on safety-related conditions. We provide a formal correctness proof of Simplex-Drive and conduct a lane-changing case study in dense traffic scenarios. The simulation experiment results demonstrate that Simplex-Drive can always ensure operation safety without sacrificing control performance, even if the DRL policy may lead to deviations from the safe status.

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Shengduo Chen, Yaowei Sun, Dachuan Li, Qiang Wang, Qi Hao, Joseph Sifakis. 2021-09-28. Runtime Safety Assurance for Learning-enabled Control of Autonomous Driving Vehicles. https://arxiv.org/abs/2109.13446

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