AZ CDL COMBINATION TEST - PRACTICE TEST
11.
Which of the following is NOT TRUE? When you drive a tractor-trailer combination with ABS, you should:
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drive slower to keep your vehicle in a straight line.
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monitor your tractor and trailer as you slow down, and if it is safe to do so, back off the brakes to stay in control.
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brake the same way, regardless of whether you have ABS on the tractor, the trailer, or both.
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12.
The service line is also called:
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signal line or air line.
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pressure line or signal line.
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control line or signal line.
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13.
You are driving a modern truck with a manual transmission. When going down a hill you should usually:
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use the same gear you would use to go up the hill.
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shift into neutral and coast.
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use a lower gear than would be required to go up the hill.
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14.
Which of the following is most likely to roll over?
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The front trailer of a double
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The rear trailer of a double
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The rear trailer of a triple
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15.
It's very important to distribute the cargo so it is:
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as low as possible.
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in the centre of the load.
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as high up as possible.
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16.
The front trailer supports are up, and the trailer is resting on the tractor. Make sure:
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there is enough clearance between the top of the tractor tires and the nose of the trailer.
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there is enough clearance between the rear of the tractor frame and the landing gear.
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All of the above.
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17.
If you are feeling sleepy, you should:
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slow down and drive on the shoulder of the road.
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pull off the road and rest or take a nap.
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increase your speed to get to the destination quicker.
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18.
Which of the following makes a rollover more likely?
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Keeping the cargo as close to the ground as possible
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Keeping the load centered on your rig
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Driving quickly around turns
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19.
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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The last trailer of doubles
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The last trailer of triples
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20.
Most heavy trucks with manual transmissions require ____ to change gears.
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triple clutching
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double clutching
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single clutching
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