HAZMAT CDL PRACTICE TEST - HAWAII
21.
When you leave your vehicle you should:
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leave the key in the ignition.
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apply the service brake.
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None of the above.
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22.
Why should you check your mirrors regularly to know where other vehicles are around you?
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To move out of their way if they want to get past.
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To know whether you can make a quick lane change in an emergency.
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To flash the brake lights if you are being tailgated.
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23.
Placards are used to:
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force other drivers to change lane.
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warn motorcyclists to drive in another lane.
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warn others of hazardous
materials.
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24.
Most heavy vehicles require ________ change gears.
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single clutching
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double clutching
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double shifting
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25.
If another vehicle is following closely, you should NOT:
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speed up.
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avoid quick changes.
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increase your following distance.
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26.
An ABS system:
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helps you avoid skids caused by over braking.
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gives you more control over the vehicle during braking.
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All of the above.
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27.
If your placarded trailer has dual tires, you should check the tires:
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once every 3 months.
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at the start of each trip and every time you stop.
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once every 100 miles.
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28.
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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go right if the shoulder is clear.
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29.
If you have to drive off the road, you should:
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keep one set of wheels on the pavement, if possible.
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brake as hard as you can to maintain control.
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fully apply the brakes until your speed has dropped to about 20 mph.
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30.
When more cargo is piled up in a truck, the center of gravity moves:
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closer to the ground.
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higher up from the road.
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to the left side of the truck.
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