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CDL practice tests

Every practice test has 30 questions from one subtest and is scored against 80%, the federal passing score for CDL knowledge tests. The number of questions on the real test is set by your state.

Answer every question, then tap Check results to see your score and the explanation for each answer.

General Knowledge

Practice test 130 questions · pass with 24 (80%)

Practice test 230 questions · pass with 24 (80%)

Practice test 330 questions · pass with 24 (80%)

Practice test 430 questions · pass with 24 (80%)

Practice test 530 questions · pass with 24 (80%)

Practice test 630 questions · pass with 24 (80%)

Practice test 730 questions · pass with 24 (80%)

Practice test 830 questions · pass with 24 (80%)

Practice test 930 questions · pass with 24 (80%)

Practice test 1030 questions · pass with 24 (80%)

Practice test 1130 questions · pass with 24 (80%)

Practice test 1230 questions · pass with 24 (80%)

Practice test 1330 questions · pass with 24 (80%)

Practice test 1430 questions · pass with 24 (80%)

Air Brakes

Practice test 130 questions · pass with 24 (80%)

Practice test 230 questions · pass with 24 (80%)

Practice test 330 questions · pass with 24 (80%)

Practice test 430 questions · pass with 24 (80%)

Practice test 530 questions · pass with 24 (80%)

Combination Vehicles

Practice test 130 questions · pass with 24 (80%)

Practice test 230 questions · pass with 24 (80%)

Practice test 330 questions · pass with 24 (80%)

Practice test 430 questions · pass with 24 (80%)

Practice test 530 questions · pass with 24 (80%)

Doubles/Triples

Practice test 130 questions · pass with 24 (80%)

Practice test 230 questions · pass with 24 (80%)

Practice test 330 questions · pass with 24 (80%)

Practice test 430 questions · pass with 24 (80%)

Tank Vehicles

Practice test 130 questions · pass with 24 (80%)

Practice test 230 questions · pass with 24 (80%)

Practice test 330 questions · pass with 24 (80%)

Practice test 430 questions · pass with 24 (80%)

Hazardous Materials

Practice test 130 questions · pass with 24 (80%)

Practice test 230 questions · pass with 24 (80%)

Practice test 330 questions · pass with 24 (80%)

Practice test 430 questions · pass with 24 (80%)

Practice test 530 questions · pass with 24 (80%)

Practice test 630 questions · pass with 24 (80%)

Passenger

Practice test 130 questions · pass with 24 (80%)

Practice test 230 questions · pass with 24 (80%)

Practice test 330 questions · pass with 24 (80%)

Practice test 430 questions · pass with 24 (80%)

Practice test 530 questions · pass with 24 (80%)

Practice test 630 questions · pass with 24 (80%)

School Bus

Practice test 130 questions · pass with 24 (80%)

Practice test 230 questions · pass with 24 (80%)

Practice test 330 questions · pass with 24 (80%)

Practice test 430 questions · pass with 24 (80%)

Practice test 530 questions · pass with 24 (80%)

Practice test 630 questions · pass with 24 (80%)