1.
To avoid rollbacks when you start, you should:
put on the parking brake whenever necessary.
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release the parking brake only when you have applied enough engine power.
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if you have manual transmission, partly engage the clutch before you take your right foot off the brake.
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All of the above.
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2.
When inspecting the cargo, make sure it is:
piled up.
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not overloaded.
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secured properly for the first 50 miles after beginning a trip.
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All of the above.
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3.
If your truck has automatic transmission, you should downshift:
whenever road conditions allow.
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when you need to accelerate.
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after entering a curve.
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when going down grades.
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4.
What is the minimum tread depth for tires other than front tires?
4/16 inch
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8/32 inch
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4/32 inch
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2/32 inch
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5.
When you drive a tractor-trailer combination with ABS, you should:
pump the brakes.
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always apply the brakes hard.
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brake as you always have.
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apply the trailer hand brake whe braking.
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6.
If a load is 50 feet long, the minimum number of tie-downs required is:
5
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10
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4
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3
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7.
You should use chocks when parking a trailer without spring brakes because:
the brakes will hold only as long as there is air pressure in the trailer air tank.
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it is required by law.
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it helpsĀ prevent brake failure.
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it helpsĀ prevent skids.
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8.
To avoid rollovers, you should drive slowly:
around corners.
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on ramps.
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off ramps.
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All of the above.
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9.
When more cargo is piled up in a truck, the truck becomes easier to turn over. Fully loaded rigs are _________ to roll over in a crash than empty rigs.
three times more likely
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five times more likely
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ten times more likely
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less likely
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10.
If you unlock the pintle hook with the dolly still under the rear trailer:
the dolly tow bar may fly up.
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the brakes could be damaged by the combined forces of the springs and the air pressure.
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your vehicle might roll away.
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steam and boiling water can spray under pressure.
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