CDL PRACTICE TEST (MN) - GENERAL KNOWLEDGE TEST

21. You should NOT use the parking brakes if:
the brakes are too dry.
the brakes are cold.
the brakes are very hot.
All of the above.
22. What should you do if your vehicle starts hydroplaning?
Leave the road completely.
Accelerate slightly, then push in the clutch to slow down.
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.
23. How far ahead do most good drivers look?
6 to 8 seconds
50 to 60 seconds
12 to 15 seconds
3 to 4 seconds
24. Most heavy trucks with manual transmissions require ____ to change gears.
single clutching
double clutching
triple clutching
None of the above.
25. Vehicles must be equipped with emergency equipment, including:
horn.
a safety valve.
spare electrical fuses.
2 battery-operated flashlights.
26. When you check your tires, you should look for all of the following EXCEPT:
Dual tires that come in contact with parts of the vehicle
Mismatched sizes
Tread separation
Tires from different manufacturers
27. When checking the condition of the steering system, you must:
grab the steering mechanism to test for looseness.
Check the windshield wiper arms.
Visually inspect the steering mechanism.
Test what happens under braking conditions.
28. Hydroplaning:
never occurs at speeds below 40 mph.
only occurs at extremely high speeds.
only happens when tire pressure is higher than normal.
can occur at speeds as low as 30 mph.
29. In ideal conditions, if you are driving at 55 mph your vehicle will travel a minimum of _______ until you can bring it to a complete stop.
209 feet
At least 350 feet
250 feet
419 feet
30. Containerized loads are used:
when the cargo has been or will be carried by rail or ship.
when transporting liquids.
when the cargo exceeds the weight limit.
when transporting explosives.
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