UTAH DOUBLES TRIPLES PRACTICE CDL TEST

11. You must have at least 4/32 inch tread depth in every major groove on front tires and at least ___ inch on other tires.
1/32
4/32
3/32
2/32
12. You as a driver should always:
stay in your lane.
drive slowly in the left lane of traffic.
make emergency plans when you see a hazard.
reduce your following distance.
13. When should you be particularly careful about high winds?
When driving at night
When driving in winter
When emerging from a tunnel
When going downhill
14. Which of the following is not a type of retarder?
Electric
Exhaust
Pressure
Hydraulic
15. To start moving without rolling back, you should:
apply the trailer brake hand valve.
put on the parking brake whenever necessary.
partly engage the clutch before you take your right foot off the brake.
All of the above.
16. If your trailer starts to skid, you should:
release the brakes.
steer in the opposite direction.
lock the brakes.
pump the brakes.
17. Engine oil pressure should come up to normal within _________ after the engine is started.
two minutes
seconds
ten minutes
five minutes
18. Pre-trip inspections of doubles and triples should:
take more time than inspecting straight trucks.
be done by the shipper.
be done once a week.
take less time than inspecting straight trucks.
19. Enough tread is especially important in winter conditions. You need at least ________ tread depth on steering axle tires.
8/32 inch
6/24 inch
2/8 inch
4/32 inch
20. When inspecting the coupling, make sure the fifth-wheel jaws have closed around the:
shank of the kingpin.
the electrical cord.
head of the kingpin.
the brake camshaft.
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