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CDL Endorsements Explained: Which Ones Should You Get?

Understand the different CDL endorsements, their requirements, and which ones offer the best career opportunities.

Drixova Team

Author

January 5, 20259 min read

What Are Endorsements?

Endorsements are additional certifications added to your CDL that allow you to operate specific types of vehicles or haul certain cargo.

Common Endorsements

H - Hazardous Materials

  • Haul dangerous goods (fuel, chemicals, explosives)
  • Requires additional written test
  • Background check and fingerprinting
  • Higher pay (+$0.03-0.08/mile)

T - Double/Triple Trailers

  • Tow two or three trailers
  • Written test only
  • Popular in western states

N - Tank Vehicles

  • Operate liquid tank trailers
  • Written test only
  • Often combined with H for tanker fuel loads

P - Passenger

  • Transport 16+ passengers (buses)
  • Written and skills test
  • Background check required

S - School Bus

  • Operate school buses
  • Requires P endorsement first
  • Extensive background check
  • State-specific additional requirements

Best Endorsements for New Drivers

Start with your base CDL, then add H and N endorsements once you have experience. These open the most opportunities for higher pay.

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