CDL PRACTICE TEST - GENERAL KNOWLEDGE (MINNESOTA)

41. What factors can cause brakes to fade?
Slippery surfaces and shaded areas.
Excessive heat and brakes out of adjustment.
Dirt roads and in unpaved yards.
Gravel and tar.
42. B:C type fire extinguishers are suitable for dealing with:
tire fires.
wood fires.
cloth and paper fires.
electrical fires and burning liquids.
43. Antilock brakes:
help you stop faster.
decrease your stopping distance.
let you drive faster.
None of the above.
44. Placards are:
devices placed below a vehicle to improve traction.
a type of safety equipment.
signs put inside a vehicle used to warn others of hazardous materials.
signs placed on a vehicle to identify the hazard class of the cargo.
45. Which of these can impair your vision and judgment, make you drowsy or otherwise affect safe driving ability?
Alcoholic drinks
Some over-the-counter drugs
Some prescription drugs
All of the above.
46. Front-end header boards:
protect drivers from cargo in case of an accident or emergency stop.
should never be used.
protect drivers from spilled cargo.
reduce traction.
47. Engine oil pressure should come up to normal within _________ after the engine is started.
seconds
ten minutes
two minutes
five minutes
48. When driving past parked vehicles, you should:
stay close to the vehicles.
turn on your taillights.
sound your horn.
watch for clues that the parked vehicle is about to move.
49. Which of the following is considered a serious traffic violation?
Excessive speeding (15 mph or more above the posted limit)
Following a vehicle too closely
Reckless driving
All of the above
50. When you have to back, you should use a helper:
only when you back up with a trailer.
only when backing toward the right side.
whenever possible.
when you need to back on a curved path.
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