TARGET: Automated Scenario Generation from Traffic Rules for Testing Autonomous Vehicles via Validated LLM-Guided Knowledge Extraction

• URL: http://arxiv.org/abs/2305.06018v4
• Date: Thu, 15 May 2025 22:10:56 GMT
• Title: TARGET: Automated Scenario Generation from Traffic Rules for Testing Autonomous Vehicles via Validated LLM-Guided Knowledge Extraction
• Authors: Yao Deng, Jiaohong Yao, Zhi Tu, Xi Zheng, Mengshi Zhang, Tianyi Zhang,
• Abstract summary: TARGET is an end-to-end framework that automatically generates test scenarios from traffic rules.<n>We leverage a Large Language Model (LLM) to extract knowledge from traffic rules.<n>TARGET synthesizes executable scripts to render scenarios in simulation.
• Score: 8.029974249105443
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recent incidents with autonomous vehicles highlight the need for rigorous testing to ensure safety and robustness. Constructing test scenarios for autonomous driving systems (ADSs), however, is labor-intensive. We propose TARGET, an end-to-end framework that automatically generates test scenarios from traffic rules. To address complexity, we leverage a Large Language Model (LLM) to extract knowledge from traffic rules. To mitigate hallucinations caused by large context during input processing, we introduce a domain-specific language (DSL) designed to be syntactically simple and compositional. This design allows the LLM to learn and generate test scenarios in a modular manner while enabling syntactic and semantic validation for each component. Based on these validated representations, TARGET synthesizes executable scripts to render scenarios in simulation. Evaluated seven ADSs with 284 scenarios derived from 54 traffic rules, TARGET uncovered 610 rule violations, collisions, and other issues. For each violation, TARGET generates scenario recordings and detailed logs, aiding root cause analysis. Two identified issues were confirmed by ADS developers: one linked to an existing bug report and the other to limited ADS functionality.

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