CDL DOUBLES TRIPLES PRACTICE TEST NEBRASKA
11.
Your mirrors should be adjusted so that:
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a part of the vehicle is visible in the mirror.
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more than half of the mirror shows the vehicle.
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the rear of the vehicle is visible in the mirror.
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no part of the vehicle is visible in the mirror.
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12.
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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13.
The application pressure gauge:
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shows how much air pressure is being applied to the brakes.
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stops the compressor from pumping air.
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tells you how much pressure is in the air tanks.
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protects the tank and the rest of the system from too much pressure.
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14.
Emergency equipment is:
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optional.
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required.
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only required when transporting hazardous materials.
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encouraged.
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15.
Retarders:
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reduce braking distance.
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reduce the danger of slipping.
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improve gas mileage.
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help slow a vehicle, reducing the need for using brakes.
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16.
Air tanks usually hold enough compressed air to allow the brakes to be used _________ even if the compressor stops working.
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for 3 days
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for one stop
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several times
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for one day
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17.
How should you brake if your vehicle loses ABS?
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Brake as you always have.
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Step on and off the brake pedal several times
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Stay off the Brake
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Pump the brake repeatedly
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18.
With an engine fire, you should NOT:
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shoot foam from the vehicle’s underside.
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turn the engine off as soon as possible.
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open the hood.
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None of the above.
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19.
Retarders:
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help slow a vehicle and reduce brake wear.
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apply their
braking power whenever
you push on the accelerator.
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help prevent accidents by applying extra braking power to the non-drive wheels.
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All of the above.
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20.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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increase your speed to approximately 45 mph, and then apply release the brakes.
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