CDL COMBINATION PRACTICE TEST (WI)
11.
Emergency brakes are:
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required on all vehicles.
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not required on buses.
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not required on commercial vehicles with air brakes.
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not required on doubles.
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12.
Combination vehicles usually:
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are shorter than single than single CMVs.
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require more driving skill than single CMVs.
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are easier to drive than single than single CMVs.
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All of the above.
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13.
If a vehicle is equipped with ABS, when you start the engine:
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the trailer emergency brakes will come on.
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the spring brakes will come on.
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the wheels will lock up.
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the ABS indicator light on the dash should come on and then turn off.
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14.
Placards must be at least _____ inches square.
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21.2
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12.6
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5
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9.84
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15.
When transporting cargo, the cargo should be checked:
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only before the trip.
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before the trip and after the first 50 miles.
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only after the trip.
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before the trip and after the first 150 miles.
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16.
If you begin to feel drowsy while driving, you should:
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open your window.
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get some coffee.
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pull off the road and get some rest.
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get an energy drink.
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17.
When you have to back, you should always try to back toward the driver's side. Why?
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You can see better and watch the rear of your vehicle by looking out the side window.
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You can watch the front of your vehicle by looking out the side window.
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Backing toward the left side is more dangerous.
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All of the above.
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18.
Which of these is more likely to rollover due to the "crack-the-whip" effect?
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The front trailer of 65 ft. conventional doubles
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5-axle tractor semitrailers
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The last trailer of triples
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The last trailer of doubles
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19.
A burning tire must be:
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covered with cloth.
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cooled with water.
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immediately removed from the vehicle.
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None of the above.
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20.
When backing, as soon as you see the trailer getting off the proper path, you should:
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turn the top of the steering wheel in the opposite direction of the drift.
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turn the top of the steering wheel in the direction of the drift.
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to keep a firm grip on the steering wheel and continue backing.
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None of the above.
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