Pennsylvania CDL — General Knowledge Practice Test

The Pennsylvania CDL — General Knowledge knowledge test has ~50 questions; you need ~40 correct (80%) to pass.

Or take one of 10 full-length practice tests

50 questions · pass with 40 correct. You get instant feedback and an explanation after every answer.

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The full-length test, with feedback and an explanation after every answer.

Pennsylvania CDL — General Knowledge practice tests

10 full-length practice tests, each with 50 questions and a pass mark of 40, like the real test. You see the answers and explanations after you grade.

Test 1
50 questions · pass with 40
On a newer air-brake vehicle, how do you apply the parking (spring) brakes?
Test 2
50 questions · pass with 40
While completing a wide right turn, oncoming vehicles are waiting. Why should you not back up to give them room?
Test 3
50 questions · pass with 40
When should you shift into a low gear for a downgrade?
Test 4
50 questions · pass with 40
What is the correct practice for a turn signal while you are actually making a turn?
Test 5
50 questions · pass with 40
If a first alcohol offense happens while you drive a CMV bearing hazardous materials placards, how long is the CDL loss?
Test 6
50 questions · pass with 40
The property-carrying rest-break rule lets you drive only if how much time has passed since your last off-duty or sleeper period of at least 30 minutes?
Test 7
50 questions · pass with 40
A B:C rated fire extinguisher is designed to work on which kinds of fires?
Test 8
50 questions · pass with 40
What factors determine a person's blood alcohol concentration?
Test 9
50 questions · pass with 40
The Emergency Response Guidebook (ERG) is arranged so responders can look up a material by which information?
Test 10
50 questions · pass with 40
You approach a pedestrian who wants to cross where there is no marked crossing. What should you do?