Automatic Emergency Braking Rule Delayed

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The National Highway Traffic Safety Administration (NHTSA) has announced a delay in the effective date for the Federal Motor Vehicle Safety Standard (FMVSS) No. 127, originally scheduled for November 26, 2024. This rule, which mandates the inclusion of Automatic Emergency Braking (AEB), Pedestrian Automatic Emergency Braking (PAEB), and Forward Collision Warning (FCW) systems in all new light vehicles, will now take effect on March 20, 2025. The delay stems from a regulatory review ordered by the President to ensure proper assessment of new rules.

Key Highlights of the Delay

  • Affected Regulation: FMVSS No. 127 pertains to safety systems like AEB, PAEB, and FCW in light vehicles.
  • Original Timeline: Initially set for November 26, 2024.
  • Revised Date: Effective date moved to March 20, 2025.
  • Reason for Delay: A presidential memorandum issued on January 20, 2025, mandated a review of new regulations to ensure thorough examination.
  • Petitions for Reconsideration: The delay follows responses to requests for adjustments from various stakeholders, including the Alliance for Automotive Innovation, Toyota, Volkswagen, and others.
  • Exemption from Public Comment: The delay was enacted without public consultation due to the urgency and public interest in a seamless regulatory review process.

Context and Implications

The rule, as finalized in May 2024 and amended later that year, aims to enhance road safety by standardizing advanced collision-avoidance systems in light vehicles. While the delay temporarily halts enforcement, it allows additional time for review and possible refinements to the rule’s implementation.

NHTSA emphasized that this action aligns with a broader effort to ensure effective and balanced regulatory processes. The postponement is part of a proactive approach to align safety standards with technological advancements and stakeholder feedback.

For further inquiries, stakeholders are directed to NHTSA’s technical and legal contacts, ensuring transparency throughout this transition period.

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