ALASKA CDL AIR BRAKES PRACTICE TEST
16.
If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.
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2 seconds
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4 seconds
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3 seconds
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17.
On front tires, tread should be at least:
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2/32 inch
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4/32 inch
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4/16 inch
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18.
When driving at night, you should:
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drive slowly enough to see obstacles with your headlights.
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put your own high beams on if other drivers don't put their low beams on.
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look directly at the lights of oncoming vehicles.
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19.
The air compressor stops pumping air into the air storage tanks when air tank pressure rises to around:
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125 psi.
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450 psi.
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100 psi.
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20.
Your vehicle has air brakes. To stop, you should:
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push the brake pedal down.
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release the accelerator, push in the clutch, and shift to Neutral at the same time.
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pull the parking brake control knob out.
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