MO CDL DOUBLES TRIPLES PRACTICE TEST
11.
Watch out for black ice:
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when the temperature is above freezing and the road is dry.
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when it is snowing.
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any time the temperature is below freezing and the road looks wet.
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12.
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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13.
To warn drivers behind you when you see you'll need to slow down, you should:
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flash the brake lights.
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sound your horn.
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use your headlights.
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14.
You should always try to back toward the driver's side because:
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backing toward the left side is more dangerous.
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you can watch the rear of your vehicle out the side window.
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None of the above.
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15.
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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16.
During freezing weather, which area is most likely to be slippery after it rains?
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Bridges.
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Shaded areas.
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All of the above.
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17.
During a walk around inspection of a combination vehicle, drivers should check that:
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all locking pins are present and locked in place.
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the glide plate is securely mounted to the trailer frame.
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All of the above.
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18.
ABS helps you:
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drive faster.
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brake harder.
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None of the above.
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19.
It may not be safe to operate at legal maximum weights:
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during bad weather or in mountains.
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on two-way streets.
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in hot weather.
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20.
Why should you cover your cargo?
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To protect people from spilled cargo.
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To protect the cargo from weather.
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All of the above.
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