CDL COMBINATION PRACTICE TEST ARIZONA
11.
You are driving a heavy vehicle with a manual transmission, and you have to stop on the shoulder while driving on an uphill grade. When putting your vehicle back in motion up the grade, you should:
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shift down to a speed that you can control without using the brakes.
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partly engage the clutch before you take your right foot off the brake.
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use the parking brake to hold the vehicle until the clutch engages.
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12.
Off-tracking is:
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when a vehicle towing a trailer skids, and the trailer pushes the towing vehicle from behind until it spins the vehicle around.
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when the tires lose their contact with the road and have little or no traction.
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when a vehicle makes a turn and the rear wheels of the trailer end up driving in a different path than the tractor and the front wheels of the trailer.
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13.
Which of the following is NOT part of testing the trailer service brakes?
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Moving the vehicle forward slowly.
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Releasing the parking brakes.
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Pushing in the trailer air supply knob.
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14.
Which of the following is not a reason for covering cargo?
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To prevent other drivers from looking at the cargo
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To protect the cargo from weather
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To protect people from spilled cargo
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15.
The best way to test the trailer service brakes is to:
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pull forward quickly, then apply the trailer brakes with your hand control.
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accelerate to the maximum possible speed, then apply the trailer brakes fully.
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None of the above.
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16.
Cargo should be properly covered:
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to block your view or someone else’s.
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to protect people from spilled cargo.
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to protect the weather from the cargo.
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17.
You are driving a combination vehicle and must use your brakes to avoid a crash. You should:
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use stab braking or controlled braking.
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brake lightly and hold the steering wheel firmly.
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push the brake pedal as hard as you can and hold it there.
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18.
If your vehicle has dummy couplers, why should you use them when the air lines are not connected to a trailer?
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To prevent overheating.
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To prevent water and dirt from getting into the coupler and the air lines.
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Because if you don't, you will never build system pressure.
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19.
Under-loaded front axles can:
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make the steering axle weight too light to steer safely.
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cause poor traction.
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All of the above.
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20.
If you're feeling tired while driving you should:
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eat something.
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stop driving and get some rest.
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drink coffee.
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