HAZMAT CDL PRACTICE TEST - PENNSYLVANIA
21.
When should you downshift automatic transmissions?
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Watch your tachometer, and downshift when your engine reaches the top of the range.
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When you start to get drowsy.
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When you want to go faster.
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When going down steep grades.
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22.
When driving in very hot weather, you may have to:
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increase your speed until the tires cool off.
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watch out for black ice.
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reduce your speed to prevent overheating.
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decrease your following distance.
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23.
If the hazardous materials are not properly prepared, a carrier should:
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accept the shipment.
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write a report.
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refuse the shipment.
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add a note to the shipping paper.
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24.
Placards must be placed:
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less than 3 inches away from any other markings.
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so the words or numbers are read from right to left.
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so that the format, color, and message can only be seen by the driver.
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so the words or numbers are read from left to right.
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25.
If your brakes fail on a steep mountain downgrade, you should:
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leave the road immediately.
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use an escape ramp if it is available.
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change lanes after making sure there is enough room.
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go right if the shoulder is clear.
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26.
Some packages of radioactive materials bear a number called the "transport index", which tells:
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if the material is safe to transport.
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the weight of the package.
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the degree of control needed during transportation.
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how the package was sealed.
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27.
To know how much space you should keep in front of you:
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wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the same spot.
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estimate how many seconds it would take you to reach the vehicle ahead.
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estimate how many vehicle lengths there are between you and the vehicle ahead.
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None of the above.
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28.
When fueling a vehicle containing hazardous materials, you should:
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leave the engine on.
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call your supervisor.
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leave the nozzle unattended.
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turn off the engine.
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29.
Two of the most common causes of tire fires are:
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Loose lug nuts and duals that touch.
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Driver smoking and bleeding tar.
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Over-inflated tires and duals that touch.
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Duals that touch and under-inflated tires.
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30.
You should flash your brake lights to warn drivers behind you when:
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you see a bus stops in the roadway ahead to unload passengers.
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you see a hazard that will require slowing down.
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you see you'll need to slow down.
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All of the above.
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