NEVADA DOUBLES TRIPLES PRACTICE CDL TEST
11.
Which of the following is most likely to roll over?
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The rear trailer of a triple
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The middle trailer of a triple
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The front trailer of a double
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The rear trailer of a double
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12.
Watch out for black ice:
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when the temperature is above freezing and the road is dry.
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any time the temperature is below freezing and the road looks wet.
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right after it starts to rain.
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when it is snowing.
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13.
Which of the following statements about retarders is NOT correct?
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Retarders help you avoid skids.
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You should turn the retarder off whenever the road is wet, icy, or snow covered.
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Retarders reduce reduce brake wear.
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Retarders help slow a vehicle, reducing the need for using brakes.
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14.
If your brakes fail on a steep mountain downgrade, you should:
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set the parking brake and park in an open area.
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stay on the road and keep looking for the next available escape ramp.
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slow down until your vehicle comes to a complete stop.
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decide what to do as soon as you know your brakes do not work.
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15.
What should you do if you doubt you have safe space to pass under a low bridge?
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Increase the weight of your vehicle to clearing under the bridge.
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Assume that the height posted at the bridges is correct.
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Go slowly, and take another route if you are not sure you can make it.
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If no warnings are posted, assume there is enough clearance under the bridge and proceed slowly.
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16.
Tire load is defined as:
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the weight transmitted to the ground by 1 tire.
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the minimum safe weight a tire can carry at a specified pressure.
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the maximum safe weight a tire can carry at a specified pressure.
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the minimum tire pressure.
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17.
Many large vehicles have convex (curved, "spot, "fisheye") mirrors. Convex mirrors:
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misrepresent reality by showing a larger area than flat mirrors.
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are illegal in most states.
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make things look smaller and farther away than they really are.
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None of the above.
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18.
When the wheels of a trailer lock up, which of the following is most likely to occur?
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The rig will stay in a straight line but slide sideways.
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The trailer will tend to swing around (trailer jackknife).
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The trailer will the trailer
has overturn.
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The trailer will tend to push the towing vehicle sideways (tractor jackknife).
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19.
When your vehicle starts to skid, you must take action to:
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use stab braking.
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restore traction to the tires.
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accelerate and countersteer.
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use controlled braking.
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20.
Which of the following road surfaces freezes first?
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Bridges
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Open roads
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Underpasses
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Parkings
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