Florida CDL General Knowledge Practice Test (FL) 2

4.9 out of 5 (212 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Step into the realm of Florida CDL General Knowledge with our comprehensive second practice test. Tailored for both Class A and Class B license aspirants, this 20-question Florida CDL practice test is your crucial step towards mastering the essentials of commercial driving in 2026. Here, you will encounter a variety of scenarios from pre-trip vehicle inspection to the complexities of gear shifting, including downshifting, and handling challenging road conditions like steep hills and downgrades. Our Florida CDL general knowledge practice test is unique in its approach. Unlike the time-pressured real CDL test, here you can take your time to thoroughly understand and answer each question. This method not only enhances your test-taking skills but also deepens your grasp of the material. It's an opportunity to learn at your own pace, ensuring that when the time comes for the actual Florida DMV permit test, you're more than ready. Florida-specific road rules and regulations are a key focus of our CDL practice test. We understand that each state has its nuances in driving laws, and our test is customized to reflect the specific requirements of Florida. This attention to detail ensures that you are not just preparing for a general test, but for a test that is relevant to your driving environment in Florida. Upon completion, our Florida CDL general knowledge practice test provides a detailed summary of your performance. You'll see not just where you excelled, but also where you need improvement. This feedback is invaluable as it pinpoints the exact areas you need to focus on, making your study sessions more productive. Embarking on the path to a CDL in Florida begins here. With our CDL practice test, you're not just practicing; you're setting the foundation for safe and knowledgeable driving that meets and exceeds the standards of Florida's roads.
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Sample Florida CDL Test Questions - General Knowledge

Question 1

What does a WORKERS symbol warning sign tell a driver?

This sign warns drivers that _____________.
  1. A The sign applies only to road crews
  2. B Workers may be in or near the roadway
  3. C The road is completely closed ahead
  4. D A mandatory detour begins ahead

Correct answer: B – Workers may be in or near the roadway

The WORKERS sign warns road users that workers may be in or near the roadway. Florida uses this sign under the adopted MUTCD traffic-control standards. Drivers should be alert for workers and obey any additional signs, flaggers, or temporary traffic controls encountered in the work area.

Source: Manual on Uniform Traffic Control Devices for Streets and Highways, 11th ed. — § 6H.18, “Workers Signs”, Fla. Admin. Code R. 14-15.010 – Manual on Uniform Traffic Control Devices

Question 2

What occurs when a vehicle hydroplanes?

  1. A The tires lose road contact and have little or no traction
  2. B The steering wheel turns while the tires remain pointed straight
  3. C The service brakes permanently stop operating
  4. D The suspension lifts the vehicle above standing water

Correct answer: A – The tires lose road contact and have little or no traction

During hydroplaning, the tires ride on water or slush and lose contact with the road, leaving little or no traction. Steering and braking may become ineffective. It can occur at speeds as low as 30 mph when enough water is present and is more likely with worn tread or low tire pressure.

Source: Florida Commercial Driver’s License Manual — § 2.6.2, “Matching Speed to the Road Surface”

Question 3

If driving through deep water cannot be avoided, what action helps protect the brakes while crossing?

  1. A Apply gentle brake pressure while moving through the water
  2. B Press the accelerator and brake pedals hard after leaving the water
  3. C Disconnect the steering-axle brakes
  4. D Reduce engine speed and coast through in neutral

Correct answer: A – Apply gentle brake pressure while moving through the water

The manual directs the driver to select a low gear and gently apply the brakes while crossing. Light pressure holds the linings against the drums or discs and helps keep water, mud, sand, and silt out. After leaving the water, continue light pressure briefly to dry the brakes and test them when safe.

Source: Florida Commercial Driver’s License Manual — § 2.13.2, “Driving”

Question 4

Once a proper low gear is selected, how should service brakes be used on a long, steep downgrade?

  1. A Apply them continuously to hold the safe speed
  2. B Do not use them; rely only on engine braking
  3. C Brake to about 5 mph below the safe speed, release, and repeat
  4. D Apply the parking brake together with engine braking

Correct answer: C – Brake to about 5 mph below the safe speed, release, and repeat

Apply the service brakes firmly enough to produce a definite slowdown. When speed falls to approximately 5 mph below the selected safe speed, release the brakes; the application should last about three seconds. Repeat the process when the vehicle returns to the safe speed, using engine braking as the primary control.

Source: Florida Commercial Driver’s License Manual — § 2.16.4, “Proper Braking Technique”

Question 5

Which statement correctly describes the risk of nighttime commercial driving?

  1. A High beams should remain on from 7 p.m. until 7 a.m.
  2. B Drivers are generally more alert at night
  3. C Many heavy-motor-vehicle crashes occur between midnight and 6 a.m.
  4. D Road hazards are easier to identify at night

Correct answer: C – Many heavy-motor-vehicle crashes occur between midnight and 6 a.m.

The manual states that many heavy-motor-vehicle crashes occur between midnight and 6 a.m. Most people are less alert at night, particularly after midnight, and nighttime drivers are more likely to experience a fall-asleep crash. Proper rest and scheduling are important defenses against this risk.

Source: Florida Commercial Driver’s License Manual — § 2.11.2, “Driver Factors”

Question 6

A commercial driver should use low-beam headlights at all times when driving at night.

  1. A TRUE
  2. B FALSE

Correct answer: B – FALSE

Low beams should not be used automatically throughout every nighttime trip. Use high beams when conditions make their use safe and legal, because low beams reduce the distance visible ahead. Florida law requires low beams within 500 feet of an oncoming vehicle and within 300 feet when following another vehicle.

Source: Florida Commercial Driver’s License Manual — § 2.11.5, “Night Driving Procedures”, Fla. Stat. § 316.238(2)–(3) – Use of Multiple-Beam Road-Lighting Equipment

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