NEW MEXICO DOUBLES TRIPLES PRACTICE CDL TEST
11.
Emergency brakes must be held on by:
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hydraulic pressure.
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mechanical force.
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air pressure.
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12.
Longer combination vehicles have the tendency to swing wide on turns. This is called:
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hydroplaning.
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off-tracking.
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jackknifing.
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13.
Emergency equipment is:
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only required when transporting hazardous materials.
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required.
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optional.
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14.
Which of the following statements about retarders is NOT correct?
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You should turn the retarder off whenever the road is wet, icy, or snow covered.
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Retarders help slow a vehicle, reducing the need for using brakes.
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Retarders help you avoid skids.
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15.
When driving double and triple trailers, drivers should:
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allow more following distance.
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steer gently and go slowly around corners.
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All of the above.
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16.
The last trailer of triples is ______ as likely to turn over as a five-axle tractor.
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4 times
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3.5 times
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twice
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17.
Before each trip, you must make sure:
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the cargo has a high center of gravity.
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the cargo is balanced and secured.
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your cargo obscures your view to the sides.
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18.
The posted speed limit for a curve:
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is safe for trucks or buses, but it may be too fast for cars.
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may be too fast for many trucks or buses.
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is safe for all vehicles.
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19.
In newer vehicles with air brakes, you put on the parking brake:
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using a diamond-shaped, yellow, push-pull control knob.
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using a P-shaped, yellow control knob.
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placing the transmission in Park.
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20.
To use the controlled braking method in an emergency, you should:
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apply your brakes all the way, and release the brakes when the wheels lock up.
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apply the brakes as hard as you can without locking the wheels.
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apply the brakes when the wheels lock up.
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