1.
Which of the following road surfaces freezes first?
Parkings
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Underpasses
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Open roads
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Bridges
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2.
Hanging meat in a refrigerated truck can be:
a very unstable load with a low center of gravity.
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a very stable load if properly distributed.
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a very stable load with a low center of gravity.
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a very unstable load with a high center of gravity.
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3.
On dry pavement, the braking distance when travelling at 55 mph is about:
216 feet.
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419 feet.
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61 feet.
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142 feet.
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4.
Doubles and triples:
can be turned suddently due to the low center of gravity.
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have a lower chance of skidding.
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can't be turned suddenly.
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can be stopped suddenly due to their weight.
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5.
To prevent rollover, you should:
place the cargo near the front of the trailer.
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keep the cargo as close to the ground as possible.
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put the lightest parts of the cargo under the heaviest parts.
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place the cargo near the rear of the trailer.
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6.
When the wheels of a trailer lock up, which of the following is most likely to occur?
The rig will stay in a straight line but slide sideways.
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The trailer will the trailer
has overturn.
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The trailer will tend to swing around (trailer jackknife).
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The trailer will tend to push the towing vehicle sideways (tractor jackknife).
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7.
If you must drive slowly, how should you alert following drivers?
Help them out by signaling when it is safe to pass
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Flash your brake lights
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Use your emergency flashers if it is legal
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Turn on your taillights
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8.
ABS:
improves your visibility at night.
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may cause your wheels to lock when you break hard.
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helps you stop faster.
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helps you avoid skids caused by over braking.
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9.
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:
increase your speed to approximately 45 mph, and then apply release the brakes.
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apply the brakes to gradually reduce your speed to 35 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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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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10.
After the pre-trip inspection, drivers should inspect their cargo and its securing devices again within ________ after beginning the trip.
20 miles
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two hours
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25 miles
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50 miles
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