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1.
When you are uncoupling a loaded trailer, lower the landing gear until:
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it makes firm contact with the ground.
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the pressure in the system is above 55 psi.
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makes contact with the ground, and leave the trailer off the fifth wheel.
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the tractor frame is under the trailer.
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2.
If driving a heavy vehicle, you should:
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avoid braking.
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stay in the left lane.
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stay in the right lane.
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try to pass other vehicles going uphill.
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3.
When parking a trailer without spring brakes, it is very important for safety that you use wheel chocks. Why?
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The air could leak out of the trailer air tank, releasing its emergency brakes.
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You may not notice a major leak in the service line until you try to put the brakes on.
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if you don't use wheel chocks, supply air will be sent to the service line instead of going to charge the trailer air tanks.
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None of the above.
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4.
The parking brake:
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should be used when you need to apply the brakes firmly.
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should be used whenever you park.
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should be used when driving in bad weather.
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All of the above.
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5.
If during vehicle inspection a tire is too hot to touch, you should:
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immediately decrease air pressure.
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let air out.
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make sure there is enough engine oil on the tires.
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remain stopped until the tire cools off.
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6.
When you use your mirrors while driving on the road, you should:
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avoid checking them regularly.
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stare for a long time at the mirror.
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check them quickly.
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only use the driver's side mirror.
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7.
When backing with a trailer, you should:
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look at your line of travel before you begin backing.
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make pull-ups to re-position your vehicle as needed.
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check your mirrors on both sides frequently.
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All of the above.
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8.
Strong winds can make it difficult to stay in your lane, especially when:
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driving alongside other vehicles.
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driving at speeds below 40 mph.
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going into tunnels.
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coming out of tunnels.
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9.
Never
drive with landing gear only part way up. Why?
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It may catch on railroad tracks.
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It must be exactly 5 feet off the ground.
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It may be harder to use.
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It makes it harder to brake.
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10.
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:
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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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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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increase your speed to approximately 45 mph, and then apply release the brakes.
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