1.
Before driving a vehicle with a dual air system, allow time for the air compressor to build up a minimum of ____ pressure in both the primary and secondary systems.
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100 psi
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50 psi
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75 psi
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25 psi
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2.
Which of the following is NOT correct? Anti-lock brakes:
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require drivers to apply the brakes as hard as they can without locking the wheels.
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help drivers avoid skids caused by over braking.
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help drivers avoid wheel lock up.
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give drivers more control over the vehicle during braking.
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3.
Dual tires:
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should not come in contact with each other.
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are dangerous.
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should always come in contact with each other.
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should come in contact with each other whenever possible.
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4.
Brake lag is:
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the amount of air pressure required to stop the vehicle.
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the distance your vehicle will continue to travel, in ideal conditions, before you hit the brakes.
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the distance your vehicle will travel, in ideal conditions, while you are braking.
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the time required for the air brakes to work after the brake pedal is pushed.
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5.
If you are being tailgated, you should:
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make quick changes.
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open up room in front of you.
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increase your speed very gradually.
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turn on your taillights.
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6.
For safe handling, the heaviest trailer should be:
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behind the tractor.
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the last trailer.
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the second trailer in a triple.
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None of the above.
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7.
Dollies with ABS are required to have a malfunction lamp:
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on the left side.
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on the rear.
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on the front.
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on the right side.
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8.
Which of the following statements is true?
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There is no way that short circuits due to damaged insulation can cause a vehicle fire.
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Under-inflated tires will NOT cause a vehicle fire.
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Poor cargo ventilation is a common cause of fire.
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Carrying a properly charged and rated fire extinguisher will help prevent fires.
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9.
Empty trucks:
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require the same stopping distance than full trucks.
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require a greater stopping distance than full trucks.
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require a shorter stopping distance than full trucks.
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None of the above.
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10.
When driving in heavy traffic, the safest speed is:
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the same speed as the other vehicles.
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faster than the other vehicles.
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slower than the other vehicles.
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half the speed of the other vehicles.
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