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China's draft mandatory AEB standard for heavy vehicles closes for comment on November 4

The industry ministry put an approval draft for heavy-vehicle automatic emergency braking out for public notice on October 28, proposing that it replace a recommended standard from 2019 and take effect on January 1, 2028.

China’s Ministry of Industry and Information Technology published a notice on October 28 seeking public comment on an approval draft of a mandatory national standard for automatic emergency braking systems on heavy vehicles. The notice, issued by the ministry’s Department of Science and Technology, set the publicity period from October 29 to November 4, with feedback to be sent by email. It said the ministry had completed the drafting under the mandatory-standard revision plan issued by the national standards body.

The summary table attached to the notice lists the draft under plan number 20253094-Q-339 as technical requirements and test methods for automatic emergency braking systems on heavy vehicles. It specifies general requirements, performance requirements and the determination of the same type, and describes the corresponding test methods. The draft applies to vehicles in categories M2, M3, N2 and N3, and does not apply to buses with a standing area for passengers, class G vehicles, special-purpose work vehicles or refuse trucks as defined in GB/T 17350-2024.

The table gives GB/T 38186-2019 as the standard the draft would replace. That standard carries the GB/T prefix used for recommended national standards, while the draft is published as a mandatory one. The proposed implementation date is January 1, 2028, and the proposed supervising authorities are the ministry and the State Administration for Market Regulation. The table leaves its column on the adoption of international standards blank.

The same notice also covers an approval draft of the English translation of GB 18384-2025, the mandatory electric vehicle safety standard, which has already been issued. Neither draft has been issued, and the ministry gave no date for their publication.

Why it mattersMoving heavy-vehicle emergency braking from a recommended standard to a mandatory one would make the draft's performance requirements and test methods the bar the braking software is validated against, rather than a specification a manufacturer may choose to meet.

Source: MIIT public notice

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