CDL DOUBLES TRIPLES PRACTICE TEST RHODE ISLAND
11.
The trailer hand valve should:
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never be used to test the trailer brakes.
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never be used for parking.
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be used in driving.
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12.
When approaching a double railroad track, you should:
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remember that a train on one track may hide a train on the other track.
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rely upon the presence of warning signals.
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expect to hear a train when it's approaching.
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13.
With a dual air brake system:
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each system shares the same lines and hoses.
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each system shares air tanks.
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each system has its own air tanks, hoses and lines.
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14.
Which of the following is not a sign of fatigue?
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Keeping a steady speed
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Rubbing eyes
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Frequent blinking
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15.
Which of the following is NOT correct? Anti-lock brakes:
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give drivers more control over the vehicle during braking.
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help drivers avoid skids caused by over braking.
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require drivers to apply the brakes as hard as they can without locking the wheels.
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16.
When you push in the red trailer air supply knob, this will:
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disconnect the air lines from the trailer.
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open the emergency line shut-off valve at the rear of the last trailer.
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supply air to the emergency supply lines.
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17.
If an aggressive driver confronts you, you should NOT:
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ignore gestures.
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try to let them pass.
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make eye contact.
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18.
If driving a heavy vehicle, you should:
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try to pass other vehicles going uphill.
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stay in the left lane.
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stay in the right lane.
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19.
When parking a trailer without spring brakes, it is very important for safety that you use wheel chocks. Why?
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The air could leak out of the trailer air tank, releasing its emergency brakes.
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if you don't use wheel chocks, supply air will be sent to the service line instead of going to charge the trailer air tanks.
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You may not notice a major leak in the service line until you try to put the brakes on.
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20.
Before connecting the converter dolly to the rear trailer, make sure that:
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the kingpin rests on the fifth-wheel.
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the shut-off valves at the rear of the first trailer are open.
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the trailer height is slightly lower than the center of the fifth-wheel.
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