CDL PRACTICE TEST (MN) - GENERAL KNOWLEDGE TEST

11. When is it safe to remove the radiator cap?
When you can touch the radiator cap with your bare hand.
As soon as you've stopped, as long as the engine is not hot.
Whenever coolant has to be added to the system.
It is always safe.
12. Radial and bias-ply tires:
should be used together.
should not be used together.
should be used together only when driving in packed snow.
should be used together only during bad weather.
13. The parking brake should be tested while the vehicle is:
moving forward slowly.
moving back slowly.
moving at highway speeds.
None of the above.
14. Federal, state, and local regulations for commercial vehicles:
only apply to CMV's operated in interstate commerce.
vary from place to place.
only apply to US residents.
do not apply to CMV's operated in intrastate commerce.
15. Strong winds can make it difficult to stay in your lane especially when driving:
vehicles with ABS.
heavier vehicles.
flatbed trailers.
lighter vehicles.
16. If your trailer starts to skid, you should:
keep the rear of your vehicle close to the curb.
use the trailer hand brake (if you have one) to straighten out the rig.
accelerate slightly.
release the brakes to get traction back.
17. When checking the steering system for defects, you should look for:
cut or cracked valve stems.
loose, broken, or missing tailpipes.
bent, loose, or broken parts, such as tie rods.
missing or broken leaves in any leaf spring.
18. Strong winds can make it difficult to stay in your lane, especially when:
going into tunnels.
driving at speeds below 40 mph.
driving alongside other vehicles.
coming out of tunnels.
19. Regrooved tires:
cannot be used on the front wheels of buses.
cannot be used on the rear wheels of buses.
cannot be used on the wheels of buses.
None of the above.
20. Placards are used to:
indicate the maximum speed that the vehicle can travel.
indicate the maximum speed that the vehicle can reach on a level road.
identify the hazard class of the cargo.
warn the public to stay at least 500 feet away from the vehicle.
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