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Louisiana CDL Permit Test - Double

Number of questions: 20
Passing score: 16
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. Each question has three possible answer choices. Test questions come from the Louisiana Commercial Driver License Manual. Questions come from chapters covering: Transporting Cargo, Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
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Passing grade —
4 or fewer errors
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1.
When backing a trailer, you must turn the steering wheel:
In the direction you want the trailer to move.
In the direction opposite of where you want the trailer to move.
To the left until backing is complete.
2.
Rollovers happen when:
Drivers turn too quickly.
Drivers turn too slowly.
It is raining.
3.
When coupling a trailer, you should:
Couple together the proper glad hands.
Couple glad hands with any other glad hands.
Leave one pair of glad hand loose.
4.
How can you tell if a converter dolly is equipped with anti-lock brakes?
The dolly is marked with a sticker displaying the letters "ABS."
There is a plaque on the side of the dolly containing the information.
There is a yellow lamp on the left side of the dolly.
5.
The trailer hand valve should be used:
To test the trailer brakes.
To check the connection between the trailer and tractor.
To accelerate.
6.
If a load is 10 feet long, it should be secured by a minimum of:
One tie-down.
Two tie-downs.
Three tie-downs.
7.
When transporting a load, the cargo should be inspected:
By another driver.
Only after a trip is finished.
Every time you take a break.
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