True/False
Indicate whether the
statement is true or false.
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1.
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A “converter dolly” is designed to convert spring brakes to air
brakes.
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2.
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All converter dollies have spring brakes.
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3.
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When connecting a converter dolly to a second or third trailer, the trailer
height is correct when the trailer will be raised slightly as the converter dolly is backed under
it.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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4.
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When driving a truck with more than one trailer, which trailer should be the
first one behind the tractor?
a. | The lightest trailer. | b. | The heaviest trailer. | c. | The shortest
trailer. | d. | The order of trailers does not matter. |
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5.
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One method you can use to secure a second trailer before coupling is to set the
second trailer’s spring brakes, if it has them. Name one other method.
a. | There is only one correct method. | b. | Before you connect to the second trailer, apply
the tractor’s service brakes. | c. | Lower the landing gear of the second
trailer. | d. | Chock the wheels of the second trailer. |
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6.
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Which of the following statements is true?
a. | Double and triple trailers are more likely to turn over than other combination
vehicles. | b. | Double and triple trailers are subject to the “crack-the-whip”
effect. | c. | You must steer gently when pulling double or triple trailers. | d. | All of the
above. |
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7.
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How do you check to make sure the trailer height is correct before coupling to a
dolly?
a. | The dolly fifth wheel should be lower than the trailer so it does not touch when the
dolly is backed under the trailer. | b. | The trailer should be slightly lower than the
center of the fifth wheel so that the trailer raises slightly when the dolly is backed under the
trailer. | c. | The bottom of the trailer should be lower than the fifth wheel. | d. | None of the
above. |
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8.
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A truck with double or triple trailers takes up more space than other commerical
vehicles. Which of the following is true? A truck with double or triple trailers
______________.
a. | Cannot be turned or stopped suddenly. | b. | Needs to have more of a following distance in
front. | c. | Needs large gaps before entering or crossing traffic. | d. | All of the
above. |
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9.
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What do you check when making a visual check of the coupling?
a. | Make sure the lower fifth wheel is not in contact with the trailer fifth wheel
plate. | b. | Make sure there is no space between the lower fifth wheel and the trailer fifth wheel
plate. | c. | Make sure the locking jaws of the lower fifth wheel are securely closed around the
king pin. | d. | Both b and c. |
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10.
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What can happen if the pintle hook is unlocked with the dolly still under the
second trailer?
a. | The trailer brakes will unlock. | b. | The dolly tow bar may fly up causing
injury. | c. | The air lines may rupture. | d. | The first trailer will not be able to
move. |
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