Free Texas CDL practice tests

Practice for the Texas commercial driver’s license knowledge tests. The questions follow the federal CDL manual that every state builds its tests on, and every answer is explained.

Texas CDL basics

• Since June 1, 2026, every CDL and commercial learner permit knowledge test in Texas is in English only. There is no Spanish version and interpreters are not allowed.
• Federal age rules apply: 18 to drive inside Texas, 21 to drive between states or haul hazardous materials.
• You hold the permit at least 14 days before the skills test.

Free tests you can take now

• CDL quick practice test10 mixed questions to see where you stand.
• CDL pre-trip inspection testWhat to check on your vehicle before every trip.
• CDL air brakes basics testCompressor, governor, tanks and warnings.
• CDL combination vehicles basics testTrailers, rollovers and coupling.

What you can practice

• GK
  General knowledge

  Required for every CDL. Inspection, vehicle control, hazards, cargo and the rules.

• A
  Air brakes

  Compressor, tanks, warnings and the brake checks. Needed to drive any air-braked vehicle.

• CV
  Combination vehicles

  Coupling, uncoupling, rollovers and trailer skids. Needed for Class A.

Texas can add its own rules on top of the federal manual. Check the official site for Texas Department of Public Safety before your test. DMVZone is not affiliated with any state agency.