CDL TANKER TEST MAINE - PRACTICE TEST
11.
The tractor protection valve:
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keeps your wheels from locking up when you brake hard.
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prevents the trailer from being accidentally released.
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keeps air in the brake system should the trailer develop a bad leak.
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12.
Before leaving your vehicle unattended, you should:
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Apply the parking brake.
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Remove the keys.
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All of the above.
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13.
If a material is transported in a reportable quantity, the shipper displays the letters ___ on the shipping paper and package.
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RM
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RQ
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MT
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14.
When you double your speed, the braking distance is:
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the same.
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3 times longer.
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4 times longer.
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15.
Which of the following statements about tankers is true?
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A high center of gravity makes a vehicle more prone to rollover accidents.
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When loading and unloading smaller tanks, do not put too much weight on the front or rear of the vehicle.
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All of the above.
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16.
A high center of gravity is most dangerous:
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in curves.
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when the tank is empty.
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when driving below the speed limit.
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17.
Passive railroad crossings:
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have a traffic control device installed at the crossing to regulate traffic.
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do not require you to recognize the crossing.
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require drivers to decide if there is sufficient clear space to cross safely.
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18.
Older trailers do not have spring brakes. If the air supply leaks away:
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there will be no emergency brakes.
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the ABS won't work properly.
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the trailer will stop normally.
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19.
Brake lag is:
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the time required for the air brakes to work after the brake pedal is pushed.
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the amount of air pressure required to stop the vehicle.
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the distance your vehicle will travel, in ideal conditions, while you are braking.
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20.
If you are being tailgated, you should do all of the following except:
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Turn on your taillights
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Increase your following distance
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Reduce your speed gradually
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