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Safely pulling double and triple trailers requires knowledge and skill. If you want to pull double or triple trailers, you must add the Doubles/Triples (T) endorsement to your Class A CDL. The Georgia doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The GA CDL doubles triples test covers the following sections of the Georgia CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this GA CDL practice test now to prepare for the actual test!
1.
Who is responsible for inspecting the cargo?
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The motor carrier
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The shipper
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The person who loaded and secured the cargo
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The driver
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2.
The trailer hand valve should:
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never be used to test the trailer brakes.
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never be used for parking.
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be used in driving.
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All of the above.
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3.
Alcohol:
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improves reaction time.
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does not affect judgement.
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impairs depth perception.
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improves muscle coordination.
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4.
You can determine if your vehicle is equipped with ABS (anti-lock braking system) by:
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checking if your vehicle was manufactured after March 1, 1998.
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checking for a yellow ABS malfunction lamp on the instrument panel.
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looking for wheel speed sensor wires coming from the rear of your brakes.
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All of the above.
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5.
When coupling double trailers, if the second trailer does not have spring brakes, to set the trailer emergency brakes you should:
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1. Drive the tractor close to the trailer 2. Connect the emergency line 3. Charge the trailer air tank 4. Disconnect the emergency line.
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1. Disconnect the emergency line 2. Drive the tractor close to the trailer 3. Charge the trailer air tank 4. Connect the emergency line.
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1. Connect the emergency line 2. Charge the trailer air tank. 3. Drive the tractor close to the trailer 4. Disconnect the emergency line.
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1. Connect the emergency line 2. Drive the tractor close to the trailer 3. Disconnect the emergency line 4. Charge the trailer air tank.
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6.
When the temperature drops:
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bridges usually freeze after other parts of the roadway.
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bridges will not freeze.
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bridges will freeze before the road will.
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None of the above.
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7.
Doubles/triples are:
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usually faster than most CMVs.
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easier to drive than other CMVs.
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more stable than other CMVs.
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less stable than other CMVs.
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8.
Foundation brakes are used:
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at each wheel.
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only with the front wheels.
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only with the rear wheels.
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only with the right wheels.
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9.
To know if your vehicle is equipped with ABS, look for:
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the ABS shipping paper.
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the ABS logo on the steering wheel.
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a yellow ABS malfunction lamps on the instrument panel.
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an ABS placard.
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10.
Which of the following will NOT help you prevent rollover?
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Keeping the cargo as close to the ground as possible.
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Driving slowly around turns.
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Using the controlled braking method.
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All of the above.
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