CDL PRACTICE TEST - GENERAL KNOWLEDGE (ILLINOIS)

41. Gross vehicle weight (GVW) is:
the value specified by the manufacturer as the loaded weight of a combination vehicle.
the total weight of the vehicle, including the load and any trailers.
the total weight of a single vehicle and its load.
None of the above.
42. If you are being tailgated, you should:
increase your following distance.
avoid quick changes.
avoid tricks like turning on your taillights or flashing your brake lights.
All of the above.
43. The tractor protection valve:
keeps air in the brake system should the trailer develop a bad leak.
keeps air from going out if the air compressor develops a leak.
keeps your wheels from locking up when you brake hard.
prevents the trailer from being accidentally released.
44. Using a helper when backing up is:
not recommended.
illegal.
dangerous.
encouraged.
45. If your vehicle thumps or vibrates heavily, it may be a sign that:
the brakes have failed.
one of the tires has gone flat.
you need to shift up.
the engine belt is loose.
46. If you are feeling sleepy, you should:
get some coffee.
pull off the road and rest.
slow down.
drive faster.
47. When should you sound your horn?
When you are being tailgated by an aggressive driver.
When you are about to change lanes.
When steering around an obstacle.
When using your horn can help avoid an accident.
48. When driving at night, you should use ________ when you can.
low beams
emergency flashers
indicator lights
high beams
49. A hazard is:
Something you must stop for.
Something you can easily avoid.
A dangerous material.
Any road user or road condition that is a possible danger.
50. When going down a long downgrade, the speed of your vehicle will likely:
decrease.
increase.
stay the same.
None of the above.
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