MD CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST

11. A high center of gravity:
is less dangerous in curves.
means you'll have better traction.
means your vehicle is more likely to tip over.
helps the vehicle be more stable while turning.
12. When you check your tires, you should look for all of the following EXCEPT:
Mismatched sizes
Dual tires that come in contact with parts of the vehicle
Tread separation
Tires from different manufacturers
13. To correct a drive-wheel skid, you should NOT:
Steer into the skid.
Stop braking.
Push in the clutch.
Countersteer.
14. If the safety relief valve in the air brake system releases air:
the valve is fully operational.
this will supply more power to the brakes.
something is wrong.
this will supply more power to the drive wheels.
15. The space under a heavily loaded vehicle can be very small. This can cause problems:
when crossing railroad tracks.
on unpaved yards.
on dirt roads.
All of the above.
16. When should you be particularly careful about high winds?
When driving at night
When going downhill
When driving in winter
When emerging from a tunnel
17. Name a common cause of tire fires.
Overinflated tires
Bleeding tar
Under-inflated tires
Driver smoking
18. You should schedule trips:
between the hours of 6 a.m. and 6 p.m.
for the hours you are normally awake.
between the hours of 11 a.m. and midnight.
between the hours of 9 a.m. and 10 p.m.
19. Wheel rims that have had welding repairs:
should be placed in the front.
should not be used.
are safe.
None of the above.
20. When making a turn, you should turn off your turn signal:
during the turn.
to keep others from trying to pass you.
before entering the turn.
after you've turned.
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