CDL Endorsements

Every endorsement you can add to your Texas CDL — what it takes to get it, what it unlocks, and how much more you can earn.

HazMat Endorsement

Code H · Class A, Class B

Transport hazardous materials. Unlock the highest-paying loads.

15–30% above non-endorsed positions

TSA Required

Moderate

Code N · Class A, Class B

Haul liquid cargo. Command premium pay.

10–25% above non-endorsed positions

Moderate

Code T · Class A

Pull more trailers. Earn more per mile.

5–15% above single-trailer positions

Moderate

Code P · Class A, Class B

Drive people. Build community. Earn steadily.

Required for passenger positions; opens $38,000–$70,000 career range

Moderate

Code S · Class B

The most trusted route in trucking.

Required for school bus positions; $30,000–$52,000 range with summers off

Moderate

Code M · Class A, Class B

Two wheels. One endorsement. Unlimited freedom.

Not applicable for standard CDL trucking careers

Moderate

Code L (restriction removal) · Class A, Class B

Remove the restriction. Drive any commercial vehicle.

Required for all standard CDL positions — not optional

Moderate

Diesel Xtrem prepares you for every endorsement knowledge test and guides you through the full process — including TSA enrollment for HazMat.