49 CFR § 523.8 - Heavy-duty vocational vehicle.
---
identifier: "/us/cfr/t49/s523.8"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 523.8 - Heavy-duty vocational vehicle."
title_number: 49
title_name: "Transportation"
section_number: "523.8"
section_name: "Heavy-duty vocational vehicle."
chapter_name: "NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "523"
part_name: "VEHICLE CLASSIFICATION"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 32901; delegation of authority at 49 CFR 1.95."
cfr_part: "523"
---
# 523.8 Heavy-duty vocational vehicle.
Heavy-duty vocational vehicles are vehicles with a gross vehicle weight rating (GVWR) above 8,500 pounds excluding:
(a) Heavy-duty pickup trucks and vans defined in § 523.7;
(b) Medium-duty passenger vehicles; and
(c) Truck tractors, except vocational tractors, with a GVWR above 26,000 pounds;
[76 FR 57491, Sept. 15, 2011, as amended at 89 FR 52945, June 24, 2024]