HAWAII CDL AIR BRAKES PRACTICE TEST
16.
Most heavy vehicles require ________ change gears.
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double shifting
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double clutching
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single clutching
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17.
Vehicles with ABS have ______ ABS malfunction lamps on the instrument panel.
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orange
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yellow
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green
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18.
Emergency brakes must be held on by:
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air pressure.
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hydraulic pressure.
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mechanical force.
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19.
The one-way check valve:
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supplies air to the trailer air tanks.
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keeps air from going out if the air compressor develops a leak.
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keeps your wheels from locking up when you brake hard.
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20.
If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
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5, 50 and 500 feet
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10, 100 and 200 feet
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5, 25 and 50 feet
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