AIR BRAKES CDL PRACTICE TEST - DELAWARE
11.
You are driving on a steep downgrade. If your safe speed is 35 mph, you should apply the brakes when your speed reaches:
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30 mph
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35 mph
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25 mph
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45 mph
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12.
Some vehicles have a separate air tank which can be used to:
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turn on the 4-way emergency flashers.
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release the spring brakes.
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unload cargo or passengers.
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hold the vehicle or combination of vehicles stationary.
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13.
Before starting down a hill, you should slow down and shift down:
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to a speed that you can control without using the brakes hard.
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so you can coast downhill.
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to a gear that will cause your brakes to overheat.
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to a gear that will cause your engine to exceed its redline.
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14.
An Anti-lock Braking System (ABS):
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lets you drive faster.
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always shortens your stopping distance.
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keeps your wheels from locking up when you brake hard.
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increases your normal braking capability.
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15.
Controlled braking:
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involves pumping the brakes while keeping steering wheel movements very small.
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involves locking the wheels and then releasing the brakes.
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must be used when you need to turn sharply while braking.
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can be used to keep your vehicle in a straight line and allow you to turn if necessary.
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