CDL GENERAL KNOWLEDGE TEST (AR) - PRACTICE TEST
21.
To prevent fire, you should:
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inspect tires and cargo.
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check that the fire extinguisher is charged.
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inspect the electrical, fuel, and exhaust systems.
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All of the above.
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22.
Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
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GPS
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hydraulic brakes.
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anti-lock brakes.
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a rear backup camera.
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23.
Key suspension system parts include:
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Lock rings
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Bearing plates
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Tie rod
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All of the above.
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24.
Placards are used to:
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indicate the maximum speed that the vehicle can reach on a level road.
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identify the hazard class of the cargo.
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indicate the maximum speed that the vehicle can travel.
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warn the public to stay at least 500 feet away from the vehicle.
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25.
Air storage tanks:
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use parts of the service brake systems to stop the vehicle in a brake system failure.
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are installed in the first tank the air compressor pumps air to.
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pump air into the air storage tanks.
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hold compressed air for the brakes.
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26.
The use of brakes on a steep downgrade is:
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the main braking factor.
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a supplement to the braking effect of the engine.
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dangerous, and should be avoided at all costs.
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much more effective than the engine braking effect.
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27.
An Anti-lock Braking System (ABS):
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lets you drive faster.
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keeps your wheels from locking up when you brake hard.
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always shortens your stopping distance.
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increases your normal braking capability.
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28.
To make the brakes work, air brakes use:
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carbon monoxide.
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nitrogen.
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compressed air.
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hydraulic air.
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29.
When driving on wet roads, you should reduce your speed by about:
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one-fifth.
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one-half.
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one-third.
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one-quarter.
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30.
For fire safety, the correct list of items you should check during your pre-trip inspection is:
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cargo, fuel, steering wheel, electrical system, fire extinguisher.
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tires, cargo, fuel, electrical and exhaust systems, fire extinguisher.
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fuel and fire extinguisher.
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cargo, fuel, electrical and exhaust systems.
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