AIR BRAKES CDL PRACTICE TEST - WISCONSIN
11.
How can you tell if your vehicle is equipped with ABS?
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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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Look for yellow ABS malfunction lamps on the instrument panel.
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All of the above.
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12.
To prevent rollover, you should:
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place the cargo near the front of the trailer.
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put the lightest parts of the cargo under the heaviest parts.
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keep the cargo as close to the ground as possible.
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place the cargo near the rear of the trailer.
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13.
After supplying air to the trailer brake system, you should check the brake system for crossed air lines by:
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checking the air brake system pressure gauge for signs of major air loss.
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shutting the engine off so you can hear the brakes.
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applying and releasing the trailer brakes and listening for the sound of trailer brakes.
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All of the above.
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14.
A low air pressure warning signal is required on:
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all vehicles with air brakes built after 2005.
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all vehicles with air brakes.
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all vehicles with air brakes built after 2009.
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Warning signals are optional.
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15.
If you must stop on a one-way or divided highway, place your warning devices:
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100 feet, 200 feet, and 300 feet toward the approaching traffic.
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50 feet, 100 feet, and 150 feet toward the approaching traffic.
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10 feet, 50 feet, and 150 feet toward the approaching traffic.
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10 feet, 100 feet, and 200 feet toward the approaching traffic.
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