You need a CDL to drive a box truck if its gross vehicle weight rating, or its actual weight, is 26,001 pounds or more; a box truck rated and loaded at 26,000 pounds or less needs no CDL. The same federal test in 49 CFR 383.5 covers every vehicle: 26,001 pounds for a single vehicle, 26,001 pounds combined with a towed unit over 10,000 pounds, 16 or more occupants, or any amount of placarded hazardous materials. This page applies it to the vehicles people ask about, then covers the exceptions and the separate rules that start at 10,001 pounds even without a CDL.
The four tests in the rule
383.5 defines a commercial motor vehicle as a motor vehicle or combination "used in commerce to transport passengers or property" if it is:
| Group | Test | License |
|---|---|---|
| A, combination | Gross combination weight rating or gross combination weight of 26,001 pounds or more, whichever is greater, with a towed unit whose GVWR or weight is more than 10,000 pounds | Class A |
| B, heavy straight | GVWR or gross vehicle weight of 26,001 pounds or more, whichever is greater | Class B |
| C, small | Neither of the above, but designed to transport 16 or more passengers including the driver, or used to transport placarded hazardous materials (or select agents or toxins) | Class C |
Three details in that wording decide most borderline cases:
- "Whichever is greater." Both the rating and the actual weight count. A truck rated at 26,000 pounds but loaded to 26,500 is a Group B vehicle while it weighs that much.
- How the combination rating is found. The gross combination weight rating is the greater of the figure on the power unit’s federal certification label or the sum of the GVWRs (or weights) of the power unit and the towed units. A pickup and trailer whose labels add up to 26,001 pounds or more meets the combination test even if the truck’s own label shows a lower combination rating.
- The towed unit must be over 10,000 pounds for Group A. A heavy truck towing a light trailer is judged as Group B, on the truck alone.
The weight thresholds have no upper end. A Class A covers any combination above 26,001 pounds, and 383.91(c) lets a Class A holder drive Class B and C vehicles too. The classes and endorsements page has the endorsement and restriction codes.
Vehicle by vehicle
Box trucks
Read the GVWR on the door-post label. At 26,001 pounds or more, it needs a Class B. At 26,000 or less it needs no CDL, as long as the loaded weight also stays at or under 26,000 and it does not tow a trailer that turns it into a Group A combination. Box trucks built at 26,000 pounds are the usual choice for non-CDL delivery work for exactly this reason. Moving companies and rental fleets sell and rent trucks either side of the line, so check the label of the actual truck, not the model name.
Dump trucks and garbage trucks
The same Group B test. There is no separate rule for dump bodies or refuse bodies; the rating decides. A dump truck towing an equipment trailer rated over 10,000 pounds, with a combined rating of 26,001 or more, needs Class A. Garbage trucks run by a city are no exception: 383.3(b) says the government and other exceptions in 390.3(f) do not apply to the CDL rules, so a municipal driver needs a CDL on the same terms as a private one.
Tow trucks
A wrecker rated 26,001 pounds or more needs Class B on its own. When it tows a disabled vehicle rated or weighing over 10,000 pounds and the combination reaches 26,001 pounds, the combination is Group A. A light wrecker under 26,001 towing a car does not meet any group.
Pickup and trailer
This is the combination most people get wrong, because each unit looks small. Add the GVWR of the pickup to the GVWR of the trailer. If the total is 26,001 pounds or more and the trailer is over 10,000 pounds, it is a Group A combination and needs a Class A CDL when used in commerce. If the trailer is rated 10,000 pounds or less, the combination cannot be Group A, and the pickup alone would have to reach 26,001 pounds to be Group B. The hotshot trucking page works through common pickup and gooseneck combinations.
Buses, school buses and vans
A vehicle designed to carry 16 or more people, counting the driver, needs a CDL even if it is light (Group C), plus the passenger (P) endorsement under 383.93(b). A school bus as defined in 383.5 also needs the school bus (S) endorsement. A 15-passenger van is below the CDL line, though it can still be a commercial motor vehicle for other federal rules when used for compensation.
Fire trucks and emergency vehicles
383.3(d)(2) lets a state, at its discretion, exempt firefighters and others driving vehicles needed to preserve life or property or for emergency government functions, fitted with audible and visual signals and not subject to normal traffic regulation. Whether your state uses this exemption, and for whom, is a state question; volunteer departments should ask the licensing agency directly.
RVs and motorhomes
The federal definition covers vehicles "used in commerce to transport passengers or property". A motorhome or travel trailer used for family travel is not what Part 383 is aimed at, and states set their own license classes for large recreational vehicles. California is a clear example. Its DMV lists a noncommercial Class A for a fifth-wheel travel trailer over 15,000 pounds GVWR or a trailer coach over 10,000 pounds GVWR, and a noncommercial Class B for a housecar (motorhome) over 40 feet but not over 45 feet, with an endorsement, when the towing is not for compensation. Its basic Class C license allows a fifth-wheel travel trailer over 10,000 but under 15,000 pounds GVWR only with an endorsement. Other states draw these lines differently, so check the state where you are licensed.
A semi for personal use
This question has no neat federal answer, and it is better to know why. The CMV definition in 383.5 depends on the vehicle being used "in commerce", and 383.5 defines commerce broadly: trade, traffic or transportation between a place in a state and a place outside it, or that affects such trade. Part 383 also does not adopt the exception for "occasional transportation of personal property by individuals not for compensation" that exists elsewhere in the regulations, because 383.3(b) says the 390.3(f) exceptions do not apply to the CDL rules. In practice the state that licenses you decides how it classes a privately owned tractor-trailer, and many drivers of personal rigs hold a CDL or a state noncommercial Class A. If the trip is connected to any business, including your own, treat it as commercial. Ask your state licensing agency for its answer in writing before you drive.
The exceptions in 383.3
| Who | Rule | Mandatory or state option |
|---|---|---|
| Military drivers (active duty, reserves, National Guard on duty, dual-status technicians, active duty Coast Guard) operating for military purposes | 383.3(c) | States must exempt |
| Farm vehicles controlled by a farmer, carrying farm products, machinery or supplies to or from the farm, not for hire, within 150 miles of the farm | 383.3(d)(1) | State option, home state only unless reciprocity |
| Firefighters and emergency vehicle drivers (as described above) | 383.3(d)(2) | State option |
| Snow and ice removal by employees of a local government of 3,000 people or fewer, when the regular licensed driver is unavailable or an emergency is declared | 383.3(d)(3); population figure from 383.5 | State option |
| Covered farm vehicles as defined in 390.5T | 383.3(h) | Part 383 does not apply |
| Restricted CDLs: remote Alaska roads; farm-related service industries (Class B and C, seasonal, within 150 miles); part-time fireworks drivers | 383.3(e), (f), (g) | State option; a license is still issued |
Below 26,001 pounds: no CDL, but not no rules
Dropping under the CDL line does not take a truck out of federal regulation. The definition used for the rest of the safety rules, in 390.5T, starts much lower: a vehicle or combination used on a highway in interstate commerce with a GVWR, GCWR or actual weight of 10,001 pounds or more, whichever is greater, is a commercial motor vehicle. A non-CDL box truck or pickup-and-trailer crossing state lines for a business is subject to:
- the driver qualification rules in Part 391, including a DOT medical certificate (391.41) and the age of 21 (391.11(b)(1));
- hours of service in Part 395, with a short-haul option for non-CDL drivers in 395.1(e)(2); see the hours of service guide;
- inspection and maintenance in Part 396, including the annual inspection in 396.17;
- a USDOT number, filed on Form MCS-150 before operations begin (390.19T(a)(1), (b)(1)), shown on both sides of the power unit (390.21T).
What a non-CDL driver avoids is Part 382 drug and alcohol testing, which applies to drivers subject to the CDL requirements (382.103(a)). DOT physicals for non-CDL drivers are listed in the DOT physical directory.
Worked examples
Examples, applying 383.5 as written.
| Vehicle | Numbers | Result |
|---|---|---|
| Box truck | GVWR 26,000; loaded to 24,000 | No CDL |
| Same box truck, overloaded | GVWR 26,000; scale weight 26,400 | Group B while it weighs that: Class B needed |
| Box truck with trailer | Truck 26,000 GVWR; trailer 8,000 GVWR | No CDL: trailer not over 10,000, truck not 26,001 |
| Dump truck with equipment trailer | Truck 33,000; trailer 14,000 | Class A |
| Pickup and gooseneck | Pickup 11,500; trailer 14,000; total 25,500 | No CDL, but a 10,001-pound CMV if used in interstate commerce |
| Pickup and gooseneck | Pickup 12,000; trailer 16,000; total 28,000 | Class A |
| Shuttle bus | GVWR 14,000; 20 seats plus driver | Class C with P endorsement |
| Pickup with placarded hazmat | Any weight | CDL with H endorsement |
What officers check at the roadside
- The label ratings of the truck and trailer, not the model name. Removing or covering a label does not change the rating.
- The scale weight, because the rule says rating or weight, whichever is greater. Weigh stations are where this usually comes up.
- Whether the license held matches the class and endorsements the vehicle needs. Driving a CMV without the right CDL, class or endorsement is a serious traffic violation under Table 2 to 383.51, and the employer may not allow it under 383.37(a).
Common mistakes
- Reading the model name instead of the label. Two trucks sold under one name can carry different ratings.
- Counting only the truck. For a combination, add the trailer, and check whether the trailer is over 10,000 pounds.
- Assuming a lighter class covers endorsements. A Class C passenger vehicle still needs the P endorsement, and any placarded load needs H.
- Assuming "no CDL" means "no DOT rules". The 10,001-pound line brings a medical card, logs and a USDOT number for interstate work.
If you do need a CDL, the how to get a CDL page sets out the steps, and schools are listed in the CDL training directory.