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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.
Over-length loads:
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require special transit permits.
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may require special equipment such as "wide load" or flags.
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require special driving care.
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All of the above.
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2.
A trailer jackknife is more likely to happen when the trailer is:
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empty.
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loaded to its full capacity.
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overloaded.
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None of the above.
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3.
If you are being tailgated, you should:
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increase your speed very gradually.
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open up room in front of you.
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make quick changes.
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turn on your taillights.
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4.
When inspecting the coupling, make sure the fifth-wheel jaws have closed around the:
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shank of the kingpin.
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the electrical cord.
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head of the kingpin.
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the brake camshaft.
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5.
Fully loaded rigs:
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are much more likely to roll over than empty rigs.
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are less likely to roll over than empty rigs.
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are just as likely to roll over as empty rigs.
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None of the above.
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6.
Empty trucks:
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require shorter stopping distances than fully-loaded trucks.
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may have poor traction.
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have better traction than fully-loaded trucks.
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None of the above.
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7.
If your vehicle is hydroplaning, you should:
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speed up.
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apply the brakes.
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stay off the brake.
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put the vehicle in reverse.
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8.
When the trailer breaks away or develops a bad leak, the tractor protection valve will close automatically and:
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the trailer emergency brakes will come on.
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the engine will shut down.
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the tractor will lose all air pressure.
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the trailer supply valve will stay open.
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9.
To prevent getting sleepy while driving, you should:
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close the vent.
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keep cool by opening the window.
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drive alone whenever possible.
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keep the cab warm.
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10.
An ABS system:
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requires a change in the way you brake.
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is a safety anti-skid braking system.
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decreases your stopping distance.
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helps increase a vehicle's stopping power.
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