CDL General Knowledge Test 3 – Classic Mode

This is CDL General Knowledge Test 3 in our original Classic Mode. Simply click in your answer to each CDL practice test question. When you're finished, check your score and results. You can reset the test and retake it as needed.

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1. The following statements about an engine overheating are TRUE EXCEPT...

A Antifreeze is only used in colder temperatures
B If you can touch the radiator cap with your bare hand, it is probably cool enough to open.
C It is not possible to safely drive without radiator fluid
D Never leave the engine running if it is overheating

2. When going down a hill you should always...

A Use higher gears when you have a heavy load
B Allow the brakes to heat up for better stopping power
C Be in the right gear before starting down the hill
D Put heavy pressure on the brakes to allow the drums to cool

3. The best time to test your parking brake is...

A When the vehicle is parked
B When the vehicle is going down a hill
C When the vehicle is moving slowly
D When the vehicle is traveling on the highway

4. Which is NOT part of the pre-trip inspection...

A Check engine oil level
B Check horn(s)
C Check air seat adjustments
D Check seat belt fastener

5. How much space should you maintain in front of you at highway speeds?

A Seven seconds for a 60 foot vehicle
B Five seconds for a 60 foot vehicle
C Ten seconds for a 60 foot vehicle
D Three seconds for a 60 foot vehicle

6. Which one of the following is true about shifting gears?

A Remain in neutral as long as possible
B Allow the engine tachometer to rev into the highest range possible
C Ignore how the engine sounds
D Shift at the best RPM range for your vehicle

7. When making a left hand turn you should always...

A Wait until you reach the center of the intersection before you turn
B Start in the left hand lane if there are two turning lanes
C Pull into the intersection in case the light turns before you are through
D Wait for a small gap in traffic and accelerate

8. The best way to warn the drivers behind you that you are slowing down is to...

A Blow your horn
B Turn on your emergency flashers
C Tap your brakes
D Flash your bright lights

9. What is the best thing to do if you are tired?

A Drink plenty of coffee to stay awake
B Take pills to keep you alert
C Plan your trips for the middle of the night to avoid traffic
D Get enough sleep

10. When backing up the tractor trailer, try to AVOID...

A Backing toward the right (passenger) side
B Backing toward the left (driver's) side
C Pulling ahead to reposition your trailer
D Having someone help/guide you

End of Test #3

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