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AVSC Information Report for Change Risk Management

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RATIONALE & INTRODUCTION
 

The operation of any SAE Level 4 or 5 automated vehicle on private or public roads inherently involves the assessment of safety risks to property or persons. Additionally, changes introduced after an automated driving system-dedicated vehicle (ADS-DV) has been deployed can introduce new risks or alter the assumptions for existing risks that arise from changes in the ADS-DVs design and operations. Developers may benefit from knowledge regarding how safety risks resulting from changes can be systematically identified, evaluated, and managed at every stage of the ADS’s lifecycle. 

 
Though there are a variety of existing standards that cover risk identification, evaluation, and management for conventional road vehicles, they do not explicitly cover the risk management process for either planned changes or unplanned changes in ADS-DV design and/or operations.
 
All changes have the potential to introduce risk or alter the assumptions associated with existing risks. A change risk management (CRM) process is suggested to address these eventualities. CRM is a process for identifying, evaluating, and managing risks that arise from changes in the ADS-DV’s design and operations. The CRM process generally includes the following steps:
 
Analyze the CRM triggers.
Identify hazards that may be generated by the change(s).
Analyze and identify new risks based on defined hazards related to the change.
Evaluate and assess new risks for each hazardous event that can be identified out of defined hazards related to the change.
Identify and evaluate potential safety measures for the newly outlined hazardous events and associated safety risks related to the change. 
Implementing and validating safety measures as appropriate.
Continue iterating, as needed.
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RATIONALE & INTRODUCTION
 

The operation of any SAE Level 4 or 5 automated vehicle on private or public roads inherently involves the assessment of safety risks to property or persons. Additionally, changes introduced after an automated driving system-dedicated vehicle (ADS-DV) has been deployed can introduce new risks or alter the assumptions for existing risks that arise from changes in the ADS-DVs design and operations. Developers may benefit from knowledge regarding how safety risks resulting from changes can be systematically identified, evaluated, and managed at every stage of the ADS’s lifecycle. 

 
Though there are a variety of existing standards that cover risk identification, evaluation, and management for conventional road vehicles, they do not explicitly cover the risk management process for either planned changes or unplanned changes in ADS-DV design and/or operations.
 
All changes have the potential to introduce risk or alter the assumptions associated with existing risks. A change risk management (CRM) process is suggested to address these eventualities. CRM is a process for identifying, evaluating, and managing risks that arise from changes in the ADS-DV’s design and operations. The CRM process generally includes the following steps:
 
Analyze the CRM triggers.
Identify hazards that may be generated by the change(s).
Analyze and identify new risks based on defined hazards related to the change.
Evaluate and assess new risks for each hazardous event that can be identified out of defined hazards related to the change.
Identify and evaluate potential safety measures for the newly outlined hazardous events and associated safety risks related to the change. 
Implementing and validating safety measures as appropriate.
Continue iterating, as needed.

 

SCOPE


This Automated Vehicle Safety Consortium™ (AVSC) information report provides a process for change risk management for fleet-operated ADS-DVs using level 4 or 5 automation. The document addresses risks resulting from planned and unplanned changes in an ADS-DV design and/or operation.
This process assumes initial risk assessment and management associated with design, development, testing, and operations have been conducted for the ADS-DV according to relevant standards. The document is not intended to be used for the initial risk management in functional safety, safety of the intended functionality (SOTIF), cybersecurity- related safety, design safety and other safety-related domains. This information report does not establish specific risk levels for developers and manufacturers or establish requirements for the specific risk management tools.

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