COMBINATION TEST ILLINOIS - PRACTICE TEST
11.
Cargo should have at least one tie-down for each ______ of cargo.
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10 feet
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5 feet
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15 feet
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20 feet
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12.
A high center of gravity means:
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the spring brakes will come fully on.
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you are more likely to tip over.
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you'll have better traction.
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a rollover is less likely.
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13.
Overloading a vehicle with cargo can have negative effects on all of the following except:
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Braking
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Weight limits
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Speed control
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Steering
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14.
Do NOT use the parking brakes:
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when you park for less than two hours.
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if the brakes are very hot.
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when you leave your vehicle.
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to test that they work.
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15.
When backing a trailer, you should:
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avoid using the brakes.
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turn the steering wheel in the opposite direction of the turn.
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try to position your vehicle so you can back on a curved path.
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turn the steering wheel toward the direction you want to go.
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16.
Which of these is more likely to rollover due to the "crack-the-whip" effect?
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The last trailer of triples
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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 doubles
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17.
The first thing to do when coupling a tractor-semitrailer is to:
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position the tractor.
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lock the trailer brakes.
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inspect the fifth wheel.
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check the trailer height.
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18.
An Anti-lock Braking System:
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increases a vehicle's stopping power.
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lets you brake faster.
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keeps your wheels from locking when you brake hard.
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increases the distamce required to stop on slippery surfaces.
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19.
The best way to test the trailer service brakes is to:
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accelerate to the maximum possible speed, then apply the trailer brakes fully.
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put the handbrake on when there are no vehicles around you.
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pull forward quickly, then apply the trailer brakes with your hand control.
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None of the above.
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20.
When parking a trailer without spring brakes, it is very important for safety that you use wheel chocks. Why?
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The air could leak out of the trailer air tank, releasing its emergency brakes.
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You may not notice a major leak in the service line until you try to put the brakes on.
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if you don't use wheel chocks, supply air will be sent to the service line instead of going to charge the trailer air tanks.
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None of the above.
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