CDL GENERAL KNOWLEDGE TEST (MINNESOTA) - PRACTICE TEST

21. When driving, you should check mirrors regularly to know where other vehicles are around you. Remember that:
every registered motor vehicle must have at least one mirror.
convex mirrors make things look larger and closer than they really are.
there are blind spots that your mirrors cannot show you.
you should check your after the start of any trip to make sure they are properly adjusted.
22. Before entering a curve, you should:
maintain your speed.
upshift.
put the gearshift in Neutral (or "Park", if automatic).
downshift.
23. When the temperature is below freezing, which of the following areas may be slippery?
Bridges
Shaded areas
Wet roads
All of the above.
24. To know when to shift, you can use each of the following except:
engine sounds.
engine speed.
perception distance.
road speed.
25. If you are being tailgated, you should:
move to the left lane.
speed up.
flash your brake lights.
increase your following distance.
26. To warn drivers behind you when you see you'll need to slow down, you should:
flash the brake lights.
use your headlights.
sound your horn.
turn off your lights.
27. Two of the most common causes of tire fires are:
Loose lug nuts and duals that touch.
Over-inflated tires and duals that touch.
Duals that touch and under-inflated tires.
Driver smoking and bleeding tar.
28. The most common type of brake is the:
S-cam drum brake
G-cam disc brake
R-cam drum brake
B-cam disc brake
29. When inspecting a vehicle's suspension, you should look for broken or missing leaves in the leaf springs.  If ____ or more are missing, it will put the vehicle out of service.
50%
10%
15%
25%
30. You must have at least ________ tread depth in every major groove on front tires.
2/32 inch
1/16 inch
4/32 inch
1/2 inch
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