CDL Practice Test - General Knowledge (Indiana)

41. On a tractor-trailer equipped with a trailer brake hand valve, the hand valve can be used to:
prevent movement of cargo.
keep from rolling back.
hold compressed air.
reduce the chance of the front wheels skidding.
42. When signaling what you intend to do, you should:
signal early.
signal continuously.
cancel your signal after you have turned.
All of the above.
43. When driving a 50 foot vehicle at 50 mph, how much space should you keep in front of you?
4 seconds
5 seconds
6 seconds
3 seconds
44. An Anti-lock Braking System (ABS):
always shortens your stopping distance.
keeps your wheels from locking up when you brake hard.
lets you drive faster.
increases your normal braking capability.
45. The parking brake:
should be used when you need to apply the brakes firmly.
should be used whenever you park.
should be used when driving in bad weather.
All of the above.
46. 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.
47. You hear a loud "bang" which sounds like a tire blowout. You should:
inspect your tires with your mirrors.
assume you have a tire failure.
keep driving as normal.
check the tires at the next stop.
48. Another name for front-end header boards is:
containerized racks.
headache racks.
cargo stopper.
head belt.
49. When driving a 60-foot truck at 50 mph, your minimum following distance should be:
5 seconds
6 seconds
7 seconds
3 seconds
50. Two of the most common causes of tire fires are:
Driver smoking and bleeding tar.
Over-inflated tires and duals that touch.
Loose lug nuts and duals that touch.
Duals that touch and under-inflated tires.
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