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STD-NHTSA-2024-001

FMVSS 127 — Automatic Emergency Braking Systems for Light Vehicles

FMVSS 127 轻型车自动紧急制动系统

JURISDICTION

United States

ORGANIZATION

NHTSA

TYPE

Regulation

STATUS

In Force

PUBLICATION DATE

2024-04-17

EFFECTIVE DATE

2029-09-01

AUTOMATION LEVEL

L0, L1, L2

OFFICIAL URL

https://www.federalregister.gov/documents/2024/05/09/2024-09379/federal-motor-vehicle-safety-standards-automatic-emergency-braking

TOPICS

Functional SafetyPerception

SUMMARY

Final rule mandating AEB with pedestrian detection on all new light vehicles in the US, with aggressive performance requirements (up to 62 mph in vehicle-to-vehicle, 45 mph pedestrian detection at night). Effective September 2029.

IMPACT / ANALYSIS

Most aggressive AEB mandate globally. Affects all OEMs selling in US, including Chinese brands entering US market.

RELATED STANDARDS

Euro NCAP AEBISO 22733
Contributor: AD Standards Tracker Seed / Zhang YuxinUpdated: 2026-04-16