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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Georgia CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Georgia CDL Manual. Take this practice test now to prepare for the actual GA CDL combination test!
1.
When you drive a tractor-trailer combination with ABS, you should:
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pump the brakes.
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brake as you always have.
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apply the trailer hand brake whe braking.
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always apply the brakes hard.
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2.
At night, when the load on a vehicle extends 4 feet or more beyond the rear of the body, there must be _______ at the end of the load.
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2 red flags
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a fluorescent orange flag
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2 lit red lights
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All of the above.
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3.
You are checking the tractor-trailer connection to make sure it is safe and secure. The landing gear should be:
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fully lowered.
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raised slightly off the ground.
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fully raised.
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None of the above.
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4.
Off-tracking is:
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when a vehicle towing a trailer skids, and the trailer pushes the towing vehicle from behind until it spins the vehicle around.
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when a vehicle makes a turn and the rear wheels of the trailer end up driving in a different path than the tractor and the front wheels of the trailer.
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when the tires lose their contact with the road and have little or no traction.
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None of the above.
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5.
When uncoupling a trailer, after shutting off the trailer air supply to lock the trailer brakes, you should:
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inspect the trailer supports.
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immediately apply your tractor parking brakes.
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back up gently to ease the pressure on the fifth-wheel locking jaws.
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pull the tractor forward until the fifth-wheel comes out from under the trailer.
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6.
If you get stuck on railroad tracks, you should:
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stay in the vehicle and call for help.
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check the engine compartment quickly.
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get out of the vehicle and away from the tracks.
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have a helper push your vehicle.
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7.
To stop a trailer skid, you should:
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use the brakes to slow down.
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countersteer to get traction back.
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release the brakes to get traction back.
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use the trailer hand brake to straighten out the rig.
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8.
What is the minimum tread depth for tires other than front tires?
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2/32 inch
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8/32 inch
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4/32 inch
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4/16 inch
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9.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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increase your speed to approximately 45 mph, and then apply release the brakes.
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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10.
When backing a truck you should:
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get out and walk around the vehicle before you begin to back.
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always rely on your mirrors.
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back and turn toward the right side.
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look straight ahead.
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