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The second trailer should be uncoupled first.
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The third trailer should be uncoupled first.
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The order of uncoupling is not important.
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The heaviest trailer should be uncoupled first.
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Georgia CDL Permit Test - Double
(From the 2021 Georgia CDL driver handbook)
| Number of questions: | 20 |
| Passing score: | 4 |
Directions:
This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the Georgia Commercial Driver’s Manual. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
Passing grade —
16 or fewer errors
advertising
1.
When uncoupling a triple trailer rig:
2.
An Anti-Lock Braking System (ABS):
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Decreases your braking distance.
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Increases your braking distance.
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Creates a loud squeaking noise when being used.
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Helps to ensure control while braking.
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3.
If driving in a foggy area, you should not:
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Decrease your speed.
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Increase your speed.
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Use your low beam headlights.
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Turn on your four-way flashers.
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4.
Using the trailer hand valve while driving:
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Will help you turn safely.
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Will stop your trailer safely.
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Can cause a skid.
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Is impossible.
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5.
What are placards?
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Signs placed on a vehicle to identify cargo hazards
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A type of tire used in snowy conditions
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Logs kept inside the vehicle
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Journals for mileage
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6.
Before coupling, you can secure a second trailer by:
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Depleting its air tanks.
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Leaning it against a wall.
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Removing its emergency line.
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Setting wheel chocks.
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7.
If the brake pads rub against the brake drums and create too much heat:
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The brakes will stick.
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The brakes will become extra sensitive.
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The brakes may stop working.
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The air compressor will kick on to cool the brakes.
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