True/False
Indicate whether the
statement is true or false.
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1.
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Converter dollies built on or after March 1, 1998 are required to have antilock
brake systems (ABS).
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2.
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Double and triple trailers are more stable on the road than other commercial
vehicles.
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3.
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Double and triple trailers are more likely to roll over than other combination
vehicles.
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4.
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Before you can supply the air tanks of a second trailer you need to open the
shut-off valves at the rear of the first trailer and close the shut-off valve at the rear of the
second trailer.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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5.
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On a double trailer combination, how can you be sure if you have supplied air to
the second trailer?
a. | Go to the rear of the second trailer and open the emergency line
shut-off. | b. | Open the hand valve and see if the rig moves. | c. | See if the air
pressure for both trailers exceeds 30 psi. | d. | Pull the red “trailer air supply”
knob. |
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6.
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What should you check for when inspecting the converter dolly?
a. | Make sure the pintle eye of the converter dolly is in place in the trailer pintle
hook. | b. | Make sure the pintle hook is latched. | c. | Both a and b. | d. | Neither a or
b. |
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7.
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How do you know if your converter dolly has anti-lock brakes?
a. | There will be a yellow lamp on the left side of the dolly. | b. | There will be a red
lamp on the right side of the dolly. | c. | The dolly will have an orange air
line. | d. | Converter dollies cannot have anti-lock brakes. |
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8.
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When visually checking the coupling of a converter dolly to the rear trailer,
how much space should be between the upper and lower fifth wheel?
a. | It depends on the weight of your load. | b. | 1/8 to 1/4 of an inch. | c. | 1/4 to 1/2 of an
inch. | d. | None. |
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9.
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When doing a walk-around inspection of a double or triple trailer combination,
you should make sure that the converter dolly air tanks are ___________ and the pintle hook is
_________.
a. | Closed; latched. | b. | Open; free. | c. | Open;
Latched. | d. | Closed; free. |
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10.
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To test the trailer brakes of a second trailer, turn the hand valve on and open
the service line valve at the rear of the trailer. What should you hear?
a. | No sound. | b. | The air escape from the open
valve. | c. | The emergency line valve release air. | d. | The service brakes slowly moving to the fully
applied position. |
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