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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Florida 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 Florida CDL Manual. Take this practice test now to prepare for the actual FL CDL combination test!
1. If you let air out of hot tires:
air pressure will increases, causing the tires to blow out.
the tires will cool off much sooner.
as the tire cools, the air pressure will be too low.
None of the above.
2. You are coupling a tractor to a semi-trailer. After checking the trailer height but before supplying air to the trailer, you should:
lock the trailer brakes.
connect the air lines to the trailer.
raise the front trailer supports.
inspect the fifth-wheel.
3. If you're feeling tired while driving you should:
stop driving and get some rest.
eat something.
increase your speed to get to your destination quicker.
drink coffee.
4. When you are driving on a slippery road, you should NOT:
take curves at slower speeds.
keep a longer following distance.
adjust turning and braking to road conditions.
use the engine brake or speed retarder.
5. When driving at night you should:
always use low beams.
keep the interior light on.
use your high beams when it is safe and legal to do so.
All of the above.
6. If you cannot make a right turn without entering another traffic lane, you should:
watch out for vehicles coming toward you and back up for them.
turn wide as you complete the turn.
turn wide before you start the turn.
swing wide to the left before starting the turn.
7. Whenever you back up with a trailer, position your vehicle so you can back in a straight line. If you must back on a curved path, back toward:
Either side.
Neither side (do not back).
the right side.
the driver's side.
8. Emergency brakes are:
required on all vehicles.
not required on commercial vehicles with air brakes.
not required on buses.
not required on doubles.
9. After coupling the trailer, begin raising the landing gear by using:
the low gear range.
the electrical cord.
the crank handle.
the high gear range.
10. The posted speed limit:
may only be exceeded when driving in rural areas.
should only be exceeded when passing other vehicles.
should never be exceeded.
is only a suggestion.
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CDL Combination Test (FL)

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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