AL CDL COMBINATION TEST - PRACTICE TEST
11.
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.
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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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12.
If your vehicle is equipped with air brakes, loss of air pressure in the emergency line will cause:
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the vehicle to slide back and forth.
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the trailer emergency brakes to come on.
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the trailer supply valve to open.
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the springs to put on the brakes.
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13.
Poor weight balance:
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improves handling.
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increases fuel efficiency.
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makes it easier to turn.
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can make vehicle handling more difficult.
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14.
The two most important things that a driver can do to prevent a rollover when driving a combination vehicle are:
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Driving slowly around turns and keeping the cargo as close to the ground as possible
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Keeping cargo near the ground and driving slowly on the highway
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Keeping cargo near the center of the vehicle and driving slowly on turns
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Keeping cargo near center of vehicle and driving slowly on the highway
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15.
Empty trucks:
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require the same stopping distance than full trucks.
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require a shorter stopping distance than full trucks.
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require a greater stopping distance than full trucks.
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None of the above.
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16.
Weight that is loaded so there is a high center of gravity:
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makes a vehicle easier to handle.
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causes greater chance of rollover.
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reduces the chance that the load will shift to the side or fall off.
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All of the above.
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17.
If your brakes get wet, it can cause them:
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to apply unevenly.
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to be weak.
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to grab.
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All of the above.
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18.
Rollovers happen when drivers:
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turn too slowly.
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brake too hard.
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turn too fast.
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stop too often.
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19.
If your truck has automatic transmission, you should downshift:
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when going down grades.
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whenever road conditions allow.
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after entering a curve.
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when you need to accelerate.
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20.
When transporting cargo, drivers must inspect the securement of the cargo every:
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30 miles
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50 miles
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150 miles
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300 miles
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