GA CDL DOUBLES TRIPLES TEST - PRACTICE TEST
11.
You should flash your brake lights to warn drivers behind you when:
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you see a bus stops in the roadway ahead to unload passengers.
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you see you'll need to slow down.
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you see a hazard that will require slowing down.
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All of the above.
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12.
If a trailer does not have spring brakes, to keep the trailer from moving you should:
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close the brake valve.
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use wheel chocks.
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use the service brakes.
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park on a slight decline.
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13.
After the pre-trip inspection, drivers should inspect their cargo and its securing devices again within ________ after beginning the trip.
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two hours
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25 miles
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20 miles
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50 miles
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14.
When should you turn the retarder off?
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when the cargo is prone to shifting.
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when your vehicle has a high center of gravity.
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when the cargo is heavy.
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when the road is slippery.
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15.
Empty trucks require _____ stopping distances because empty vehicles have ______ traction.
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less; more
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greater; more
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greater; less
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less; less
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16.
Air tanks usually hold enough compressed air to allow the brakes to be used _________ even if the compressor stops working.
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for 3 days
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for one stop
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for one day
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several times
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17.
If your brakes fail on a steep mountain downgrade, you should:
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use an escape ramp if it is available.
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leave the road immediately.
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go right if the shoulder is clear.
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change lanes after making sure there is enough room.
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18.
When driving on slippery roads, you should NOT:
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watch far enough ahead to keep a steady speed.
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go slowly.
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try to anticipate stops early.
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use the engine brake.
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19.
Placards must be at least _____ inches square.
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9.84
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21.2
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12.6
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5
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20.
When driving a 60-foot truck at 50 mph, your minimum following distance should be:
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5 seconds
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7 seconds
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6 seconds
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3 seconds
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