KS CDL DOUBLES TRIPLES PRACTICE TEST

11. The best advice for driving in fog is:
use high beams.
don't drive.
drive slowly in the left lane of traffic.
use low beams.
12. The space under a heavily loaded vehicle can be very small. This can cause problems:
on unpaved yards.
on dirt roads.
when crossing railroad tracks.
All of the above.
13. Your vehicle has air brakes. To stop, you should:
pump the brake pedal 3 times.
push the brake pedal down.
pull the parking brake control knob out.
release the accelerator, push in the clutch, and shift to Neutral at the same time.
14. When you discover a fire, if the trailer doors are hot you should not open them because:
opening the doors lets air in and may make the fire flare up.
you should use the fire extinguisher on the door.
with air many fires do less damage.
the temperature of the trailer should not be changed in any way.
15. You must have at least 4/32 inch tread depth in every major groove on front tires and at least ___ inch on other tires.
2/32
4/32
1/32
3/32
16. A trailer jackknife is more likely to happen when the trailer is:
empty.
overloaded.
loaded to its full capacity.
None of the above.
17. Which of the following will off-track the most?
The rear wheels of the last trailer.
The front wheels of the last trailer.
The front wheels of the tractor.
The rear wheels of the tractor.
18. Retarders:
help prevent accidents by applying extra braking power to the non-drive wheels.
help slow a vehicle and reduce brake wear.
apply their braking power whenever you push on the accelerator.
All of the above.
19. When you see you will need to slow down, you can warn drivers behind you by:
tapping the brakes a few times.
making gestures.
turning on the right turn signal.
slamming on the brakes.
20. The earliest way to recognize that your trailer has started to skid is:
by releasing the brakes.
by hearing squeaking noises from the wheels.
by checking the jackknife sensor.
by checking your mirrors.
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