IL CDL COMBINATION TEST - PRACTICE TEST
11.
In a vehicle with a dual air brake system:
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both systems typically operate the regular brakes on the rear axle.
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each system has its own air tanks.
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one system supplies air to the trailer.
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All of the above.
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12.
If you are being tailgated, you should:
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move to the left lane.
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increase your following distance.
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speed up.
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flash your brake lights.
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13.
When uncoupling, after you unlock the fifth-wheel you should:
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chock the trailer wheels.
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pull the tractor clear of the trailer.
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ease the pressure on the locking jaws.
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pull the tractor partially clear of the trailer.
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14.
When the wheels of a trailer lock up:
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the trailer will tend to swing around.
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the vehicle will gradually come to a complete stop.
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ABS will increase stopping power.
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All of the above.
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15.
Glad hands are:
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coupling devices.
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warning devices.
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electronic devices.
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securement devices.
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16.
When approaching a stopped bus, you must be aware that:
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passengers crossing in front of the bus can always see you.
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a student may be driving the bus.
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passing a stopped bus is illegal.
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passengers may cross in front of or behind the bus.
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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 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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You can see better and watch the rear of your vehicle by looking out the side window.
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All of the above.
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18.
Longer combination vehicles have the tendency to swing wide on turns. This is called:
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rollover.
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hydroplaning.
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jackknifing.
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off-tracking.
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19.
When driving at night you should:
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use your high beams when it is safe and legal to do so.
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keep the interior light on.
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always use low beams.
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All of the above.
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20.
Which of these is NOT part of the basic method for shifting up?
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Push in the clutch and shift to the higher gear at the same time.
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Release the clutch and press the accelerator at the same time.
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Accelerate while pressing the clutch and turn toward the driver's side.
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Release the accelerator, push in the clutch and shift to neutral at the same time.
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