Florida CDL Combination Test (FL) 2026

4.8 out of 5 (194 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Get ready to ace your Florida CDL combination endorsement with our top-notch Florida CDL combination practice test. Our driving test practice is specifically designed to cover all crucial areas like coupling and uncoupling, pre-trip inspections, driving techniques, backing and maneuvering, and air brake systems. With 20 meticulously crafted questions, you'll need to correctly answer at least 16 to pass. This Florida combination vehicle test dives deep into essential topics, including the increased stopping distances required for combination vehicles due to their greater weight. Understanding these key areas is critical for maintaining safety on the road and effectively managing the unique challenges presented by these larger, heavier vehicles. Our Florida permit practice test is focused exclusively on the endorsement-specific questions you'll encounter on the official CDL permit test. Remember, to obtain your commercial driver's license, you'll also need to pass the general knowledge test. We have a variety of general knowledge prep tests available to help you succeed. To make the most of your preparation, we recommend supplementing the DMV practice test with additional study materials such as the driver's handbook, a state-certified driver's ed course, flashcards, and road sign charts. These resources will help you target all areas of the DMV permit test, ensuring you're thoroughly prepared. The Florida permit test practice is not timed, so you can take your time working through each question, allowing for a thorough understanding of the material. This relaxed approach helps you build confidence and ensures you're fully prepared for the real test. By combining our comprehensive combination CDL test with these supplemental materials, you'll be well on your way to mastering the skills necessary for safe and effective driving of combination vehicles. Take advantage of our Florida CDL combination practice test to build your knowledge, boost your confidence, and get one step closer to obtaining your CDL endorsement. With the right preparation, you'll be ready to handle any challenge that comes your way on the road.
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Sample Florida Combination Test Questions

Question 1

Compared with an empty rig, how much more likely is a fully loaded rig to roll over in a crash according to CDL safety guidance?

  1. A Two times more likely
  2. B Three times more likely
  3. C Five times more likely
  4. D Ten times more likely

Correct answer: D – Ten times more likely

Florida’s CDL manual states that a fully loaded rig is ten times more likely to roll over in a crash than an empty rig. Cargo piled high raises the vehicle’s center of gravity and reduces stability. Keeping cargo low and centered and reducing speed before turns help limit rollover risk.

Source: Florida Commercial Driver’s License Manual — § 6.1.1, “Rollover Risks”

Question 2

During the post-coupling inspection, where should you look to verify that the fifth-wheel jaws are locked around the kingpin?

  1. A Into the rear of the fifth wheel
  2. B At the instrument panel only
  3. C In the outside mirrors only
  4. D Under the landing-gear crank

Correct answer: A – Into the rear of the fifth wheel

Florida’s coupling procedure requires looking into the back of the fifth wheel to confirm that the jaws have closed around the shank of the kingpin. The inspection also includes checking for no space between the upper and lower fifth wheel, a locked release lever, and a properly positioned safety latch. A tug test alone does not replace this visual inspection.

Source: Florida Commercial Driver’s License Manual — § 6.4.1, “Coupling Tractor-Semitrailers”

Question 3

During normal driving, which braking practice reduces the danger of causing a trailer skid?

  1. A Use the foot brake instead of the trailer hand valve
  2. B Accelerate while applying the trailer hand valve
  3. C Turn sharply while braking
  4. D Watch only one mirror while braking

Correct answer: A – Use the foot brake instead of the trailer hand valve

The foot brake sends air to the brakes on the tractor and trailer, producing more balanced braking throughout the combination. Using the trailer hand valve while driving creates a greater danger of locking the trailer wheels and causing a skid or jackknife. The hand valve should be used only to test the trailer brakes.

Source: Florida Commercial Driver’s License Manual — § 6.2.1, “Trailer Hand Valve”

Question 4

Rearward amplification can make a trailer react more sharply than the tractor during a sudden steering maneuver.

  1. A TRUE
  2. B FALSE

Correct answer: A – TRUE

Rearward amplification causes the side-to-side motion of a combination vehicle to become stronger toward the rear. During a sudden lane change, this crack-the-whip effect can make a rear trailer tip over even when the tractor remains upright. Drivers should steer smoothly and reduce speed before entering turns.

Source: Florida Commercial Driver’s License Manual — § 6.1.2, “Steer Gently”

Question 5

What does off-tracking mean when a combination vehicle turns?

  1. A The driver leaves the roadway while turning
  2. B The vehicle reverses direction in the middle of a curve
  3. C The rear wheels follow a different path from the front wheels
  4. D The vehicle travels on an unpaved road

Correct answer: C – The rear wheels follow a different path from the front wheels

Off-tracking occurs because the rear wheels follow a different path from the front wheels around a corner. Longer vehicles generally off-track more. In a tractor-trailer, the tractor’s rear wheels off-track and the trailer wheels usually off-track even farther, requiring the driver to allow enough turning clearance.

Source: Florida Commercial Driver’s License Manual — § 6.1.6, “Turn Wide”

Question 6

Why should unused glad hands be attached to dummy couplers or locked together when possible?

  1. A To circulate and clean the air automatically
  2. B To convert the brake circuit into an extra air tank
  3. C To keep water and dirt out of the couplers and air lines
  4. D To increase pressure in the service line

Correct answer: C – To keep water and dirt out of the couplers and air lines

Florida’s CDL manual directs drivers to attach unused hoses to dummy couplers to prevent water and dirt from entering the couplers and air lines. If dummy couplers are unavailable, compatible glad hands can sometimes be locked together. Keeping contamination out helps maintain a clean air supply.

Source: Florida Commercial Driver’s License Manual — § 6.2.5, “Hose Couplers (Glad Hands)”

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