HAWAII DOUBLES TRIPLES PRACTICE CDL TEST
11.
Front-end header boards:
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protect drivers from cargo in case of an accident or emergency stop.
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protect drivers from spilled cargo.
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should never be used.
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12.
You should test the coupling by:
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pulling against the pin of the second semitrailer.
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locking the pintle hook.
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applying the parking brakes so the rig will not move.
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13.
When driving a truck with more than 1 trailer, drivers should:
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be especially careful in adverse conditions.
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allow more following distance.
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All of the above.
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14.
When driving trucks with trailers, drivers should:
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make quick lane changes.
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push the brake pedal to the floor when braking.
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avoid making sudden movements with the steering wheel.
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15.
Most heavy duty vehicles use ___ air brake systems for safety.
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triple
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dual
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single
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16.
You must have at least _____ inch tread depth in every major groove on front tires.
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6/32
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2/32
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4/32
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17.
If you will be transporting hazardous materials that require placards, you must:
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obtain a hazardous materials endorsement.
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obtain a special transit permit.
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transport the materials at night only.
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18.
What is the minimum tread depth for tires other than front tires?
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2/32 inch
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8/32 inch
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4/32 inch
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19.
If a load is placed on one side of the trailer:
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making turns may be easier.
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the steering axle weight will be too light to steer safely.
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a rollover is more likely.
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20.
Which of the following will NOT help you prevent rollover?
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Keeping the cargo as close to the ground as possible.
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Using the controlled braking method.
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Driving slowly around turns.
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