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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.
You must have at least 4/32 inch tread depth in every major groove on front tires and at least ___ inch on other tires.
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3/32
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4/32
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1/32
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2/32
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2.
Which of the following is most likely to get stuck on raised railroad crossings?
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An empty truck
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A low slung unit
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A single-axle tractor pulling a small trailer
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A single-axle tractor with no trailer
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3.
Another name for front-end header boards is:
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cargo stopper.
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containerized racks.
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headache racks.
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head belt.
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4.
If you will be transporting hazardous materials that require placards, you must:
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transport the materials at night only.
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ask permission of the local transportation agency.
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obtain a hazardous materials endorsement.
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obtain a special transit permit.
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5.
When you double your speed, the braking distance is:
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4 times longer.
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the same.
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3 times longer.
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2 times longer.
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6.
To prevent rollover, you should:
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go slowly around turns.
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keep the cargo as close to the ground as possible.
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drive slowly around on ramps and off ramps.
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All of the above.
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7.
If your vehicle thumps or vibrates heavily, it may be a sign that:
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the brakes have failed.
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the engine belt is loose.
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one of the tires has gone flat.
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you need to shift up.
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8.
The trolley valve should be used only:
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in an emergency.
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to test the trailer brakes.
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to prevent skids.
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in driving.
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9.
Your mirrors should be adjusted so that:
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a part of the vehicle is visible in the mirror.
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no part of the vehicle is visible in the mirror.
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more than half of the mirror shows the vehicle.
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the rear of the vehicle is visible in the mirror.
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10.
If you cannot make a right turn without entering another traffic lane, you should:
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turn wide as you complete the turn.
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watch out for vehicles coming toward you and back up for them.
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turn wide before you start the turn.
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swing wide to the left before starting the turn.
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