AIR BRAKES CDL PRACTICE TEST - FLORIDA
6.
When you make a quick lane change, the crack-the-whip effect can:
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the trailer to swing wide to the left.
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make it harder to turn without skidding.
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improve your traction.
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turn the trailer over.
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7.
Vehicles with air brake systems take longer to come to a complete stop than vehicles with hydraulic brakes because of:
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brake lag.
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tire pressure.
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brake fading.
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reaction distance.
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8.
Front wheel braking is good:
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under all conditions.
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only in good weather.
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only in wet conditions.
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Never.
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9.
Which of the following is NOT a way to determine if your trailer is equipped with ABS (antilock braking system)?
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The letters "ABS" are printed on the side of the steering wheel.
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It has yellow ABS malfunction lamps.
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Wheel speed sensor wires are coming from the back of the brakes.
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It was built after March 1, 1998.
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10.
Which of the following is NOT part of the drum brake?
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Return spring
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Brake drum
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Safety valve
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Axle
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