INDIANA CDL COMBINATION PRACTICE TEST

11. If your brakes get wet, it can cause them:
to be weak.
to grab.
to apply unevenly.
All of the above.
12. When using a fire extinguisher, you should stay:
as far away from the fire as possible.
as close to the fire as possible, without getting burnt.
at least 10 feet away from the fire.
at whatever distance you think is safe.
13. The emergency air line:
causes the tractor protection valve to close when the emergency line loses pressure.
controls the emergency brakes on combination vehicles.
supplies air to the trailer air tanks.
All of the above.
14. To avoid rollovers, you should drive slowly:
around corners.
off ramps.
on ramps.
All of the above.
15. During a trip:
you should not watch gauges as they can be misleading.
you should watch gauges to make sure that valve caps are not missing.
you should watch gauges for signs of trouble.
None of the above.
16. Anti-lock brakes:
increase your stopping distance.
help you stop faster.
keep your brakes from locking up when you brake hard.
reduce the perception distance.
17. If you get stuck on the railroad tracks, the first thing you should do is:
scream for help.
try to move your vehicle until you see the train.
stay in your vehicle and call 911.
immediately get out of the cab and move away from the tracks.
18. If you begin to feel drowsy while driving, you should:
pull off the road and get some rest.
get some coffee.
get an energy drink.
open your window.
19. Poor weight balance:
makes it easier to turn.
improves handling.
can make vehicle handling more difficult.
increases fuel efficiency.
20. Do not use the trailer hand valve in driving because:
the trailer emergency brakes will come on.
of the danger of making the trailer skid.
the brakes can overheat and lose their braking power.
All of the above.
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