Arizona CDL Knowledge Test Class A: Practice Test
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If the low air pressure warning signal comes on, you should:
Continue driving, but have the brakes repaired within a week.
Pull over and inspect the brakes.
Phone a mechanic while driving.
People working on a disabled vehicle:
Are probably aware of the roadway.
May be distracted by the repair and not pay attention to the roadway.
Are exempt from traffic laws.
Which of the following is true?
It is safe to drive on a tire that is missing one or two lug nuts.
A cracked lock ring on a rim is safe if you are not driving faster than 55 mph.
A missing clamp on a rim is dangerous and should be corrected.
Which of the following is acceptable if found during a pre-trip inspection?
Tires of mismatched sizes
Cracks in the tires
Tires manufactured by different makers
Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.
One half
One third
One fifth
If there is a fire in your vehicle and you are not sure how to extinguish it, you should:
Use a fire extinguisher.
Try douse the flames with water.
Move away from the flames and wait for the firefighters.
A safety belt:
Helps secure a driver in a crash.
Allows a driver to be thrown within their vehicle in a crash.
Makes it difficult for a driver to operate a vehicle.
After starting the engine, the Anti-Lock Braking System (ABS) light stays on if:
The ABS is working properly.
The ABS is not working properly.
The ABS is not engaged.
If there is a cargo fire in a box trailer:
The trailer doors should be opened.
The trailer doors should not be opened.
A large, heavy blanket should be put over the trailer.
During the driving test, when asked to make a lane change:
You should not be concerned with other motorists.
You should use your turn signal and change lanes when safe.
You should make the lane change as quickly as possible, even if that means cutting off another driver.
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