StacksVerified U.S. regulatory reference

49 CFR §523.6

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (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. (1)Heavy-duty pickup trucks and vans;
    2. (2)Heavy-duty vocational vehicles;
    3. (3)Truck tractors with a GVWR above 26,000 pounds; and
    4. (4)Heavy-duty trailers.
  2. (b)The heavy-duty vehicle classification does not include vehicles excluded as specified in 49 CFR 535.3.