IA CDL DOUBLES TRIPLES TEST - PRACTICE TEST
11.
When driving a 50-foot truck at 40 mph, your minimum following distance should be:
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5 seconds
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4 seconds
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6 seconds
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12.
Hanging meat in a refrigerated truck can be:
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a very stable load if properly distributed.
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a very unstable 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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13.
You as a driver should always:
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stay in your lane.
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reduce your following distance.
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make emergency plans when you see a hazard.
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14.
When should you be particularly careful about high winds?
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When driving at night
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When going downhill
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When emerging from a tunnel
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15.
When coupling, you should:
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make sure the trailer kingpin is bent.
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make sure the trailer wheels are not chocked.
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be aware that wrong coupling and uncoupling can be very dangerous.
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16.
Front-end header boards:
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protect drivers from cargo in case of an accident or emergency stop.
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should never be used.
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protect drivers from spilled cargo.
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17.
In vehicles with air brakes, the air compressor governor:
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controls how much air the air compressor will pump into the air storage tanks.
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controls when the air storage tanks will pump air into the air compressor.
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controls when the air compressor will pump air into the air storage tanks.
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18.
Weight that is loaded so there is a high center of gravity:
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causes greater chance of rollover.
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makes a vehicle easier to handle.
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reduces the chance that the load will shift to the side or fall off.
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19.
The tractor protection valve:
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controls the emergency brakes on combination vehicles.
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supplies air to the trailer air tanks.
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keeps air in the tractor brake system should the trailer break away or develop a bad leak.
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20.
The service line is also called:
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control line.
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cable line.
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brake line.
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