What CDL Do I Need?
Pick the vehicle you want to drive. Each guide gives the class, the weight limits that decide it, the knowledge tests you take, and what people get wrong.
The three classes in one paragraph
Class A is a combination rated over 26,001 pounds where the towed unit is rated over 10,000: a tractor-trailer. Class B is a single vehicle rated 26,001 pounds or more: a dump truck, a bus, a refuse truck. Class C is a lighter vehicle that needs a CDL anyway, because it carries 16 or more passengers including the driver or placarded hazardous material. A Class A covers B and C, and a Class B covers C.
Two things sit outside the classes and catch people out. Air brakes is not an endorsement: it is a restriction that stays on your license until you pass the air brake knowledge test. And only H, N, P, S, T and X are endorsements, so there is no endorsement for a dump truck, a flatbed or a tow truck.
Class A CDL
A combination rated over 26,001 pounds with a towed unit over 10,000 pounds. The broadest license: it covers Class B and Class C vehicles too.
Class A CDL
Semi Truck
A semi truck pulling a trailer needs a Class A CDL. That means three knowledge tests: General Knowledge, Combination Vehicles and Air Brakes.
See the class and tests
Class A CDL
Flatbed
A flatbed tractor-trailer needs a Class A CDL. A flatbed body on a single straight truck is a Class B, or no CDL at all if the rating is under 26,001 pounds.
See the class and testsClass B CDL
One vehicle rated 26,001 pounds or more, towing nothing heavier than a 10,000 pound trailer.
Class B CDL
Dump Truck
A standard dump truck needs a Class B CDL, and you will almost certainly need the air brake restriction removed. Pull a trailer heavy enough behind it and it becomes a Class A.
See the class and tests
Class B CDL
School Bus
A full size school bus needs a Class B CDL with both the P and S endorsements, and the air brake restriction removed. The S endorsement sits on top of P rather than replacing it.
See the class and tests
Class B CDL
Concrete Mixer
A ready mix concrete truck needs a Class B CDL with the air brake restriction removed. No endorsement is required for the drum itself.
See the class and tests
Class B CDL
Garbage Truck
A refuse truck needs a Class B CDL with the air brake restriction removed. Roll off and transfer trailer work can push it to a Class A.
See the class and testsCDL class set by the ratings
These are built on both sides of the line. The rating plate, not the shape of the vehicle, decides which license you need.
CDL class set by the ratings
Box Truck
It depends entirely on one number: the gross vehicle weight rating on the door jamb. Under 26,001 pounds, no CDL is required for weight. At 26,001 or over, you need a Class B.
See the class and tests
CDL class set by the ratings
Tow Truck
It depends on the wrecker and what it is hauling. Light duty tow trucks usually need no CDL. Heavy wreckers need a Class B, and once the towed vehicle is heavy enough the combination can be a Class A.
See the class and tests
CDL class set by the ratings
Lineman
There is no lineman CDL. The truck decides it: a full size digger derrick or line truck is a Class B, and most utility employers want a Class A because crews tow pole and reel trailers.
See the class and tests
CDL class set by the ratings
Passenger Bus or Shuttle
Any vehicle built to carry 16 or more passengers including the driver needs a CDL with the P endorsement. Over 26,001 pounds that is a Class B; under it, a Class C.
See the class and tests
CDL class set by the ratings
Tanker or Fuel Truck
A tanker needs the N endorsement, on a Class A for a tractor and tank trailer or a Class B for a tank on a straight truck. Fuel and most chemical loads need the H endorsement too.
See the class and testsUsually no CDL
No CDL is normally required for these, and here is exactly why, along with the cases that change the answer.
Usually no CDL
RV or Motorhome
For personal use, almost certainly no CDL. The federal CDL rules cover commercial operation, and a privately driven motorhome is not that. A few states do require a special non-commercial license for the heaviest rigs.
See the class and tests
Usually no CDL
Food Truck
Almost never. Nearly all food trucks are rated under 26,001 pounds and need no CDL. The propane aboard is normally a service quantity rather than a placarded load.
See the class and testsYour vehicle is not on the list
The class comes down to the same three questions every time: is anything being towed and what is it rated, what is the vehicle itself rated, and does it carry 16 or more passengers or placarded hazardous material. The CDL Selector walks you through them and names the class and endorsements at the end.
Next steps
These guides explain the federal class definitions in 49 CFR Part 383. States may be stricter and several have their own intrastate exemptions, so the edge cases are decided by your state’s CDL licensing agency. BeginCDL.com is independent and not affiliated with any state agency.