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Scenario-based safety evaluation has become increasingly important for the verification and validation of Automated Driving Systems (ADS). In 2022, ISO 34502 [5] was officially published to address this need. This standard incorporates some essential parts of the Automated Driving Safety Evaluation Framework (ADSEF) [6] developed by the Japan Automobile Manufacturers Association. ADSEF adopts the Physics Principles Approach, which incorporates the underlying Physics Principles of the Dynamic Driving Task (DDT) for the safety evaluation of scenarios. In order to apply ADSEF in practice, it is essential to align it with existing safety standards, in particular ISO 21448 (Safety of Intended Functionality (SOTIF) [4]). However, ADSEF does not provide clear guidelines for its use in conjunction with SOTIF, and it is essential to analyze the relationship between the two in order to apply both in real practice. In this paper, we have analyzed their relationship in terms of their underlying safety principles and safety requirements. Our findings indicate that while ADSEF is aligned with a limited subset of SOTIF elements, full compliance with the SOTIF standard requires the integration of additional methodologies beyond ADSEF.

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Alignment of SOTIF and Scenario-Based Safety Evaluation Framework

  • 会议论文

  • 发表日期：

    2026年

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  • Ikue Warren,
  • Kenji Taguchi,
  • Sou Kitajima,
  • Hiroki Nakamura,
  • Tomoyoshi Murata

摘要

Scenario-based safety evaluation has become increasingly important for the verification and validation of Automated Driving Systems (ADS). In 2022, ISO 34502 [5] was officially published to address this need. This standard incorporates some essential parts of the Automated Driving Safety Evaluation Framework (ADSEF) [6] developed by the Japan Automobile Manufacturers Association. ADSEF adopts the Physics Principles Approach, which incorporates the underlying Physics Principles of the Dynamic Driving Task (DDT) for the safety evaluation of scenarios. In order to apply ADSEF in practice, it is essential to align it with existing safety standards, in particular ISO 21448 (Safety of Intended Functionality (SOTIF) [4]). However, ADSEF does not provide clear guidelines for its use in conjunction with SOTIF, and it is essential to analyze the relationship between the two in order to apply both in real practice. In this paper, we have analyzed their relationship in terms of their underlying safety principles and safety requirements. Our findings indicate that while ADSEF is aligned with a limited subset of SOTIF elements, full compliance with the SOTIF standard requires the integration of additional methodologies beyond ADSEF.