Oklahoma CDL Classes Explained
Which Oklahoma CDL class you need depends on vehicle weight, what it tows, and the type of operation, not just the truck size. The three classes are set by federal rule (49 CFR 383.91) and are the same in every state, so a Oklahoma CDL is valid nationwide. Oklahoma Service Oklahoma issues the license and runs the knowledge and skills tests. Oklahoma's energy sector drives strong demand for tanker and HazMat-endorsed operators across the oil patch.
A Class A CDL is generally used for combination vehicles, including tractor-trailers, when the gross combination weight rating is 26,001 pounds or more and the towed unit is over 10,000 pounds.
Knowledge Test Topics
- General Knowledge
- Air Brakes if equipped
- Combination Vehicles
- Vehicle Inspection
- Basic Vehicle Control
- Road Test
Common Job Types
- Tractor-trailer driver
- Regional freight driver
- Heavy combination vehicle operator
- Class A delivery driver
Oklahoma Class A CDL
A Class A CDL is the most common CDL in the country and the license behind most of Oklahoma's long-haul and heavy freight, much of it moving on I-35, I-40, I-44. With oil and gas field services, agriculture and cattle, aerospace logistics driving demand, typical Oklahoma Class A CDL work includes:
- Oil and gas field services: crude, fuel, and chemical tankers (N and H endorsements) serving the energy sector
- Agriculture and cattle: livestock trailers and refrigerated meat loads to packers and markets
- Aerospace logistics: oversize aircraft sections and aerospace components on specialized flatbed and step-deck trailers
- Wind energy equipment: oversize wind-turbine blade and tower transport
Apply, test, and schedule through Oklahoma Service Oklahoma. Not sure this is your class? Use the Oklahoma CDL Selector.
A Class B CDL is generally used for a single commercial motor vehicle with a gross vehicle weight rating of 26,001 pounds or more, plus limited towing.
Knowledge Test Topics
- General Knowledge
- Air Brakes if equipped
- Vehicle Inspection
- Basic Vehicle Control
- Road Test
Common Job Types
- Straight truck driver
- Dump truck driver
- Large bus driver
- Box truck driver
- Concrete mixer driver
Oklahoma Class B CDL
A Class B CDL covers the single heavy vehicles that keep Oklahoma moving locally: no tractor-trailer, but everything from dump trucks to full-size buses. Typical Oklahoma Class B CDL work includes:
- Oil and gas field services: water trucks, vacuum trucks, and single-unit haulers on well sites and plants
- Agriculture and cattle: feed and farm-service trucks (many states offer a restricted farm CDL)
- Aerospace logistics: straight trucks moving parts, tooling, and ground-support equipment between plants and airfields
- Wind energy equipment: crane support and component trucks at wind sites
Apply, test, and schedule through Oklahoma Service Oklahoma. Not sure this is your class? Use the Oklahoma CDL Selector.
A Class C CDL may apply when the vehicle does not meet Class A or B weight definitions but is used for passengers, school bus operation, or placarded hazardous materials.
Knowledge Test Topics
- General Knowledge as required
- Passenger or School Bus endorsement if applicable
- HazMat endorsement if applicable
- State-specific requirements
Common Job Types
- Shuttle driver
- Small passenger vehicle driver
- School activity driver
- HazMat delivery driver
Oklahoma Class C CDL
A Class C CDL applies to lighter vehicles in Oklahoma that still need a CDL because of what they carry: 16 or more passengers, or placarded hazardous materials. Typical Oklahoma Class C CDL work includes:
- Oil and gas field services: crew transport vans and light-duty HazMat deliveries to field sites
- Agriculture and cattle: farm crew transport when the vehicle carries 16 or more passengers
- Smaller school buses and activity buses for Oklahoma school districts (P and S endorsements)
- Shuttle, paratransit, and church or community vans built for 16 or more passengers
Apply, test, and schedule through Oklahoma Service Oklahoma. Not sure this is your class? Use the Oklahoma CDL Selector.
Not sure which class applies to you?
Answer a few questions about your vehicle and operation, and the CDL Selector gives you a starting point in under a minute.