§ 523.6 Heavy-duty vehicle.

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Title 49 CFR: Transportation › Chapter V: NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION › Part 523: VEHICLE CLASSIFICATION › § 523.6: § 523.6 Heavy-duty vehicle.

This text was captured on Aug 14, 2026. It is a snapshot, not a live feed, so check the official code before relying on it.

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(a) A heavy-duty vehicle is any commercial medium- or heavy-duty on-highway vehicle or a work truck, as defined in 49 U.S.C. 32901(a)(7) and (19). For the purpose of this section, heavy-duty vehicles are divided into four regulatory categories as follows:

(1) Heavy-duty pickup trucks and vans;

(2) Heavy-duty vocational vehicles;

(3) Truck tractors with a GVWR above 26,000 pounds; and

(4) Heavy-duty trailers.

(b) The heavy-duty vehicle classification does not include vehicles excluded as specified in 49 CFR 535.3.

[81 FR 74237, Oct. 25, 2016, as amended at 89 FR 52945, June 24, 2024]

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