TEXAS CDL AIR BRAKES PRACTICE TEST
11.
Emergency brakes and parking 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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All of the above.
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12.
An alcohol evaporator is important during:
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dry weather.
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windy weather.
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cold weather.
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hot weather.
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13.
What is a dual air brake system?
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2 separate air brake systems: one system operates the left brakes, the other system operates the right brakes.
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2 separate air brake systems: one system for daytime driving, the other system for nighttime driving.
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2 separate air brake systems: one system operates the front brakes, the other system operates the rear brakes.
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None of the above.
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14.
When driving a 60 foot truck at 35 mph in ideal conditions, you should keep at least _______ of space in front of you.
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4 seconds
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6 seconds
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12 seconds
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5 seconds
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15.
If your vehicle does not have automatic air tank drains, how often should you drain air tanks to remove moisture and oil?
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At least once a month.
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Every 4 hours.
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At the end of each working day.
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Once a week.
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