Trucking dictionary
GVWR (gross vehicle weight rating)
GVWR: GVWR, or gross vehicle weight rating, is the maximum loaded weight a manufacturer sets for a single vehicle: the truck itself plus fuel, driver, passengers and cargo. It's printed on the label in the driver's door jamb. Federal rules use GVWR, not actual weight, to decide many things, including whether a driver needs a CDL.
The rule
Federal regulations define GVWR as "the value specified by the manufacturer as the maximum loaded weight of a single motor vehicle" (49 CFR 390.5). For a truck pulling a trailer, the combined rating is the GCWR (gross combination weight rating).
Source: 49 CFR 390.5, eCFR · checked 2026-10
Why it matters
- CDL class. A single vehicle rated at 26,001 lb or more needs a Class B CDL; a combination rated 26,001 lb or more, towing a trailer rated over 10,000 lb, needs Class A (49 CFR 383.91). See CDL classes.
- Registration. Interstate commercial vehicles at 10,001 lb or more (by rating or actual weight, whichever is greater) need a USDOT number.
- Payload. GVWR minus the truck's empty weight is the most it's rated to carry. Road weight laws can limit it further.
In practice
- 26 ft box truck GVWR
- 25,999 lb: no CDL by weight
- Same truck at 26,001 lb GVWR
- Class B CDL
- Hotshot: truck 14,000 + trailer 11,999
- GCWR 25,999: no CDL by weight
- Tandem dump truck GVWR
- 66,000 lb: Class B CDL
- Box truck payload
- 25,999 - 16,500 empty = 9,499 lb
EXAMPLE ratings. Read your door and trailer labels; the label, not the brochure, decides.
That's why most 26 ft box trucks used for non-CDL work are rated just under 26,001 lb. Two otherwise identical trucks can need different licenses because of a label. For dump trucks, the rating and the axle spacing together decide how much you can legally haul; see dump truck sizes.
Where do I find my truck's GVWR?
On the certification label, usually in the driver's door jamb. Trailers have their own label, often near the front on the driver's side.
Can I change my GVWR?
Only the manufacturer, or a certified alterer following federal rules, can re-rate a vehicle, and registering at a different weight with your state doesn't change the GVWR. Ask before you buy a truck based on a re-rating.
Is GVWR the same as gross weight?
No. GVWR is the rating. Gross weight is what the truck actually weighs on a scale, which must not exceed legal road limits. Check any truck with the CDL checker.
Steve Woods · Lead Dispatcher, TruckSprint
Steve Woods leads the TruckSprint dispatch desk and reviews every guide we publish. How we research and update guides.
Updated October 2026