CDL GENERAL KNOWLEDGE TEST (NH) - PRACTICE TEST
11.
The best way to recover from a brake failure while going downhill is to:
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use the escape ramp.
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use the parking brake.
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use engine braking.
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be prepared to countersteer.
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12.
Retarders:
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help slow a vehicle.
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reduce brake wear.
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reduce the need for using your brakes.
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All of the above.
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13.
An alcohol evaporator:
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is used to reduce the risk of ice in air brake valves and other parts during cold weather.
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used to reduce the chance of the front wheels skidding.
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protects the air brake system from too much pressure.
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to hold compressed air.
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14.
To avoid rollbacks when you start, you should:
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put on the parking brake whenever necessary.
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if you have manual transmission, partly engage the clutch before you take your right foot off the brake.
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release the parking brake only when you have applied enough engine power.
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All of the above.
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15.
Driving in very hot weather:
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should never be done.
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can decrease oil pressure.
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can increase tire pressure.
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can make it difficult to stay in your lane.
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16.
Which of the following statements about cargo weight is true?
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It is always safe to operate at legal maximum weights.
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The shipper loads the cargo, and the driver is not responsible for recognizing overloads and poorly balanced weight.
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States have maximums for GVWRs, GCWRs and axle weights. You must keep weights within legal limits.
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All of the above.
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17.
Which of the following statements about slippery roads is true?
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On a wet road you should reduce speed by a half or more.
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The road will freeze before bridges will.
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Shady parts of the road provide better traction than open areas.
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None of the above.
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18.
If you triple the speed from 20 to 60 mph the impact and braking distance is:
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12 times greater.
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6 times greater.
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9 times greater.
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3 times greater.
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19.
Serious traffic violations include:
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driving a CMV without obtaining a CDL.
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excessive speeding.
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erratic lane changes.
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All of the above.
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20.
When you park, you should try to park:
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so there is enough room to back out.
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on the shoulder of the road.
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so you'll be able to pull forward when you leave.
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None of the above.
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