Free California CDL practice tests

Practice for the California 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.

California CDL basics

• You need a regular California Class C license before you apply for a CDL.
• The commercial learner permit is valid for 180 days and can be renewed once. You hold it at least 14 days before the skills test.
• You get three attempts per knowledge test. Fail the same test three times and the application expires.
• An original Class A or B license also needs an extra 15 hours of behind-the-wheel training.

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.

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