CDL General Knowledge Practice Test
#3 Questions with Correct Answers
1. The following statements about an engine overheating are TRUE EXCEPT... -
ANSWERSA Antifreeze is only used in colder temperatures
2. When going down a hill you should always... - ANSWERSC Be in the right gear
before starting down the hill
3. The best time to test your parking brake is... - ANSWERSA When the vehicle is
parked
4. Which is NOT part of the pre-trip inspection... - ANSWERSC Check air seat
adjustments
5. How much space should you maintain in front of you at highway speeds? -
ANSWERSA Seven seconds for a 60 foot vehicle
6. Which one of the following is true about shifting gears? - ANSWERSD Shift at the
best RPM range for your vehicle
7. When making a left hand turn you should always... - ANSWERSA Wait until you
reach the center of the intersection before you turn
8. The best way to warn the drivers behind you that you are slowing down is to... -
ANSWERSC Tap your brakes
9. What is the best thing to do if you are tired? - ANSWERSD Get enough sleep
10. When backing up the tractor trailer, try to AVOID... - ANSWERSA Backing toward
the right (passenger) side
11. Which of the following are causes of vehicle fires... - ANSWERSA Spilled fuel
B Short circuits
C Driver smoking
D All of the above (correct answer)
12. Hydroplaning can occur when you drive through water or slush. If you experience
hydroplaning you should... - ANSWERSB Release the accelerator and push in the
clutch
13. An engine retarder (Jake Brake) is designed to... - ANSWERSA Use engine power
to slow down the vehicle
#3 Questions with Correct Answers
1. The following statements about an engine overheating are TRUE EXCEPT... -
ANSWERSA Antifreeze is only used in colder temperatures
2. When going down a hill you should always... - ANSWERSC Be in the right gear
before starting down the hill
3. The best time to test your parking brake is... - ANSWERSA When the vehicle is
parked
4. Which is NOT part of the pre-trip inspection... - ANSWERSC Check air seat
adjustments
5. How much space should you maintain in front of you at highway speeds? -
ANSWERSA Seven seconds for a 60 foot vehicle
6. Which one of the following is true about shifting gears? - ANSWERSD Shift at the
best RPM range for your vehicle
7. When making a left hand turn you should always... - ANSWERSA Wait until you
reach the center of the intersection before you turn
8. The best way to warn the drivers behind you that you are slowing down is to... -
ANSWERSC Tap your brakes
9. What is the best thing to do if you are tired? - ANSWERSD Get enough sleep
10. When backing up the tractor trailer, try to AVOID... - ANSWERSA Backing toward
the right (passenger) side
11. Which of the following are causes of vehicle fires... - ANSWERSA Spilled fuel
B Short circuits
C Driver smoking
D All of the above (correct answer)
12. Hydroplaning can occur when you drive through water or slush. If you experience
hydroplaning you should... - ANSWERSB Release the accelerator and push in the
clutch
13. An engine retarder (Jake Brake) is designed to... - ANSWERSA Use engine power
to slow down the vehicle
