MINNESOTA DOUBLES TRIPLES PRACTICE CDL TEST
11.
To make the brakes work, air brakes use:
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hydraulic air.
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nitrogen.
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carbon monoxide.
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compressed air.
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12.
You as a driver should always:
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reduce your following distance.
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stay in your lane.
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drive slowly in the left lane of traffic.
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make emergency plans when you see a hazard.
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13.
How should you apply the brakes when going down a steep downgrade?
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You should not brake, and only use engine braking to prevent brake failure.
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Apply the brakes when you reach the bottom of the downgrade.
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Apply the brakes as hard as you can without locking the wheels.
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Apply the brakes whenever you reach your safe speed, until your speed has been reduced to 5 mph below your safe speed.
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14.
On front tires, tread should be at least:
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1/16 inch
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2/32 inch
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4/16 inch
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4/32 inch
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15.
Why should you back toward the driver's side?
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Using double clutching requires practice.
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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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You can more easily correct any steering errors.
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All of the above.
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16.
Headache racks:
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help you keep weights within legal limits.
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protect you from being hit by your cargo.
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can blind other drivers.
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None of the above.
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17.
When you push in the red trailer air supply knob, this will:
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supply air to the emergency supply lines.
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open the emergency line shut-off valve at the rear of the last trailer.
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disconnect the electrical connector.
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disconnect the air lines from the trailer.
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18.
When going down a steep downgrade, you should primarily brake using:
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the emergency brake.
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the service brakes.
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the braking effect of the engine.
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the parking brake.
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19.
You should always try to back toward the driver's side because:
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you can watch the rear of your vehicle out the side window.
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backing toward the left side is more dangerous.
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you can more easily correct any steering errors.
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None of the above.
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20.
What factors can cause brakes to fade?
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Gravel and tar.
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Excessive heat and brakes out of adjustment.
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Dirt roads and in unpaved yards.
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Slippery surfaces and shaded areas.
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