CDL Air Brakes Practice Test - Rhode Island
16.
It may not be safe to operate at legal maximum weights:
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in hot weather.
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during bad weather or in mountains.
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on two-way streets.
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17.
Which of the following is NOT a warning sign of fatigue?
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Heavy eyelids
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Frequent blinking
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Driving at the speed of the traffic
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18.
If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.
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3 seconds
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2 seconds
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4 seconds
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19.
Which of the following is not a type of retarder?
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Pressure
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Hydraulic
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Exhaust
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20.
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 was built after March 1, 1998.
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It has yellow ABS malfunction lamps.
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