WASHINGTON CDL PRACTICE TEST - GENERAL KNOWLEDGE
11.
What is the most important hand signal you should agree on with a helper?
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Go forward
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Keep backing
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Stop
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12.
Using a helper when backing up is:
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encouraged.
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dangerous.
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illegal.
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13.
The air compressor is connected to:
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the engine.
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the radiator.
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the transmission.
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14.
Which of the following beverages contains the most alcohol?
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A 12 ounce glass of 5% beer
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A 1½-ounce shot of 80 proof liquor
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All of the above.
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15.
If you're carrying hazardous materials and are stopped at a truck stop, you should:
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leave the shipping papers on the dashboard in clear view.
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keep the shipping papers with you.
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leave the shipping papers in the driver’s door pouch or on the driver’s seat.
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16.
Stab braking:
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should never be used.
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involves applying the brakes all the way, and releasing them when wheels lock up.
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involves applying the brakes as hard as you can without locking the wheels.
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17.
Empty trucks:
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require greater stopping distances.
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are higher than loaded trucks.
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All of the above.
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18.
Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
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shifting into neutral may help slow the vehicle.
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pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
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the parking brake should never used to slow the vehicle.
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19.
The Johnson bar is a valve that:
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reduces the braking pressure to a safe level.
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is installed in the first tank the air compressor pumps air to.
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works the trailer brakes.
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20.
Wheel and rim problems include:
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mismatched lock rings.
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missing clamps.
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All of the above.
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