CDL GENERAL KNOWLEDGE TEST (MASSACHUSETTS) - PRACTICE TEST

11. When checking tires, which of the following is not a problem?
Radial and bias-ply tires used together
4/32 inch tread depth on front tires
Cracked valve stems
Too much air pressure
12. To prevent drowsiness before a trip, drivers should:
drive alone.
get at least 5 hours of sleep.
prepare the route carefully, including stopping points.
drive at night.
13. Black ice is:
dirty snow.
wet ice.
rain and snow mixed.
a thin layer of ice clear enough that you can see the road underneath it.
14. When driving in hot weather, drivers should inspect tires:
every hour or every 50 miles.
every 2 hours or every 100 miles.
every 4 hours or every 200 miles.
every 3 hours or every 75 miles.
15. Which of the following is a common cause of fire?
Under-inflated tires and duals that touch.
Improperly sealed cargo.
Short circuits due to loose connections.
All of the above.
16. You should carefully check for traffic:
When driving through an intersection.
As you approach an intersection.
When approaching a curve.
All of the above.
17. To reduce the chance of rollover, you should:
distributed the cargo as low as possible inside the trailer.
place the cargo as high as possible inside the trailer.
put the lightest parts of the cargo under the heaviest parts.
None of the above.
18. Axle weight is:
the maximum safe weight your tires can carry at a specified pressure.
the weight transmitted to the ground by one axle or one set of axles.
the weight of all the axles added together.
the value specified by the manufacturer as the loaded weight of one axle.
19. The center of gravity of a trailer should be:
as low as possible.
at the rear of the trailer.
as high as possible.
at the front of the trailer.
20. To correct a drive-wheel skid, you should NOT:
Countersteer.
Steer into the skid.
Stop braking.
Push in the clutch.
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