AL CDL DOUBLES TRIPLES TEST - PRACTICE TEST
11.
If a load is 10 feet long, the minimum number of tie-downs required is:
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2
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1
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3
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4
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12.
When connecting to the rear trailer, the trailer height should be:
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lower than the center of the fifth-wheel.
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higher than the center of the fifth-wheel.
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the same height as the fifth-wheel.
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None of the above.
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13.
Which of the following is most likely to get stuck on raised railroad crossings?
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A single-axle tractor with no trailer
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An empty truck
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A single-axle tractor pulling a small trailer
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A low slung unit
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14.
The application pressure gauge:
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tells you how much pressure is in the air tanks.
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protects the tank and the rest of the system from too much pressure.
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shows how much air pressure is being applied to the brakes.
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stops the compressor from pumping air.
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15.
How does ABS help you?
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ABS replaces your normal brakes and helps you to stop faster.
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ABS helps you avoid wheel lock up and maintain control when you brake hard on slippery surfaces.
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ABS always shortens your stopping distance.
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ABS makes stab braking more effective.
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16.
If driving a heavy vehicle, you should:
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avoid braking.
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stay in the right lane.
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try to pass other vehicles going uphill.
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stay in the left lane.
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17.
If you become drowsy while driving, you should:
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try to fight it.
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take a break.
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drink plenty of coffee.
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open the windows to get some fresh air.
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18.
Air brakes:
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are prohibited on larger vehicles.
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should be used only when driving on wet roads.
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are an effective way to stop large and heavy vehicles.
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can improve fuel efficiency.
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19.
Hanging meat in a refrigerated truck:
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can be a very unstable load.
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creates a low center of gravity.
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will not affect safe driving ability.
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should never be transported.
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20.
If your trucks has a high center of gravity, which of the following is true for curves?
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You should travel at the posted speed limit.
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You should slow down, as your truck can roll over at the posted speed limit for the curve.
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Reduce your speed to a crawl.
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None of the above.
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