WV CDL AIR BRAKES PRACTICE TEST
16.
Most heavy-duty vehicles use:
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air brakes.
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hydraulic brakes.
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solid brakes.
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pressure brakes.
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17.
When driving a 60 foot truck at 35 mph in ideal conditions, you should keep at least _______ of space in front of you.
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12 seconds
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6 seconds
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4 seconds
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5 seconds
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18.
Vehicles with air brake systems take longer to come to a complete stop than vehicles with hydraulic brakes because of:
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reaction distance.
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tire pressure.
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brake fading.
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brake lag.
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19.
At 55 mph, the total stopping distance for vehicles with air brake systems traveling in ideal conditions is:
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less than 250 feet.
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over 450 feet.
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over 250 feet.
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less than 150 feet.
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20.
How can you tell if your vehicle is equipped with ABS?
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Look for yellow ABS malfunction lamps on the instrument panel.
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Look under the vehicle for the wheel speed sensor wires coming from the back of the brakes.
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Trailers will have yellow ABS malfunction lamps on the left side.
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All of the above.
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