AIR BRAKES CDL PRACTICE TEST - MASSACHUSETTS
21.
An Anti-lock Braking System (ABS):
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keeps your wheels from locking up when you brake hard.
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lets you drive faster.
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always shortens your stopping distance.
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increases your normal braking capability.
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22.
If a load is 10 feet long, the minimum number of tie-downs required is:
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2
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1
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3
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4
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23.
Air pressure should build up in a single air system, within about:
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1 minute.
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10 minutes.
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3 minutes.
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15 minutes.
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24.
At passive railroad crossings, even if there are active railroad signals that indicate the tracks are clear, you must _________ to be sure it is safe to proceed.
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go, look and put the transmission in neutral
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stop, look, and listen
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listen, look and stop
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go, stop and listen
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25.
The safety valve is usually set to open at:
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100 psi
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200 psi
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150 psi
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125 psi
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