CDL GENERAL KNOWLEDGE TEST (ND) - PRACTICE TEST

11. Which of the following statements about engine overheating is true?
Low speeds create more heat for the engine.
You should never shut off an overheated engine until it cools.
You should never remove the radiator cap or any part of the pressurized system until the system has cooled.
None of the above.
12. The minimum tire tread depth for all tires other than front tires is:
2/32 inch
1/32 inch
6/32 inch
4/32 inch
13. What should you do if your vehicle starts hydroplaning?
Release the accelerator and push in the clutch to let the wheels turn freely.
Apply the brakes and countersteer to regain control of the vehicle.
Leave the road completely.
Accelerate slightly, then push in the clutch to slow down.
14. What should you do when confronted by an aggressive driver?
Ignore gestures
Hold-your-own in your travel lane
Challenge them by speeding up
Make eye contact
15. Suspension system defects include:
steering wheel play of more than 10 degrees.
cracked or broken spring hangers.
rust around wheel nuts.
All of the above.
16. The safety relief valve is located:
on each end of the vehicle's axles.
in the first tank the air compressor pumps air to.
in the front brake.
on the dashboard.
17. In vehicles with air brakes, the air compressor governor:
controls when the air storage tanks will pump air into the air compressor.
controls how much air the air compressor will pump into the air storage tanks.
controls when the air compressor will pump air into the air storage tanks.
None of the above.
18. How far should you scan ahead when driving?
One block at lower speeds
A quarter of a mile at highway speeds
12-15 seconds
All of the above.
19. If another driver is following you too closely, you should:
immediately pull over to the side of the road.
turn on your warning flashers.
decrease your following distance.
None of the above.
20. What is the minimum tread depth for front tires?
1/2 inch
4/32 inch
3/8 inch
1/32 inch
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