This is the first of four different General Knowledge CDL practice tests that we offer. Please take all of our free practice tests to ensure that you score well on the big day! General Knowledge questions cover common topics involving the proper operation of a commercial vehicle and safe driving in general.
Our free General Knowledge CDL practice test contains 10 questions. You may not skip any of the questions. There is no time limit on the test. For maximum practice, we highly recommend taking each of our free CDL practice tests at least once.
Our CDL practice test database contains hundreds of questions. If you need more practice or want to improve your score, click the ‘Restart Quiz’ button at the end of the test. The questions will be presented in a different order but they’ll be the same questions you already answered. The second time around you should know the answers!
General Knowledge CDL Practice Test 1
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Question 1 of 10
How do you know when you have the right engine speed and road speed to shift gears?CorrectIncorrect
Question 2 of 10
Downshifting before you reach a long downhill grade __________.CorrectIncorrect
Question 3 of 10
You should downshift for a curve __________.CorrectIncorrect
Question 4 of 10
What is the purpose of the brake retarders?CorrectIncorrect
Question 5 of 10
Should you use the brake retarder when the road is wet or snow covered?CorrectIncorrect
Question 6 of 10
While driving, how far ahead should you look?CorrectIncorrect
Question 7 of 10
Why should you know what the traffic is doing on all sides?CorrectIncorrect
Question 8 of 10
Should you always be looking into the distance ahead?CorrectIncorrect
Question 9 of 10
What is the primary problem with using your mirrors?CorrectIncorrect
Question 10 of 10
On a two-lane road, where should you place the three reflector triangles?CorrectIncorrect