Florida Tank Vehicle CDL Practice Test
Below are 25 exam-style questions for the Florida Tank Vehicle CDL knowledge test, modeled on the FMCSA-aligned content used by the Florida Department of Highway Safety and Motor Vehicles. Try to answer each question on your own before reading the answer key directly under it. The questions and answer choices are shuffled deterministically per state and endorsement, so the order will stay the same on repeat visits — that lets you genuinely measure your improvement.
- A Coast in neutral
- B Use stab braking on non-ABS, full pressure on ABS, and be ready for surge
- C Pump rapidly
- D Use only the parking brake
- A Vents and valves
- B Tank shell and covers
- C All of the above
- D Pump and unloading equipment
- A Allow another driver to load for them
- B Begin loading without checking
- C Follow site procedures and verify equipment before loading
- D Skip the site procedures
- A Leave the truck in gear without brakes
- B Use the trailer hand valve
- C Park on the shoulder without securing
- D Set both parking brakes and chock the wheels if necessary
- A Stay within reach of the controls and maintain a clear view of the operation
- B Walk away to take a break
- C Stand at least 50 feet away
- D Allow the receiver to handle everything
- A Captures vapors during loading and unloading to reduce emissions
- B Improves fuel mileage
- C Reduces engine noise
- D Operates the brakes
- A Disregard surge
- B Use the trailer hand valve as a parking brake
- C Skip outage
- D All of the above
- A Is the same as smooth-bore
- B Has no baffles
- C Has only one section
- D Has separate sections for different products
- A Skip the post-unload inspection
- B Drive away with vents open
- C Allow the receiver to close everything
- D Close vents and covers, secure equipment, and inspect for leaks before leaving
- A Take the shortest route regardless of grade
- B Avoid steep grades and sharp curves where possible
- C Use the parking brake on grades
- D Avoid all freeways
- A GOAL — Get Out And Look — and use a spotter when possible
- B Skip the visual check
- C Use only mirrors
- D Back at full speed
- A All of the above can be a cargo tank
- B Permanently mounted to the vehicle
- C A trailer-mounted tank
- D A portable tank set on the vehicle
- A All of the above
- B The tank shell for corrosion or damage
- C Manhole covers and vents
- D Special pump and valve systems
- A Drive without checking
- B Take a break only
- C Pull over and re-check the load and securement
- D Speed up
- A Open vents only after pressure is equalized
- B Open vents while pressure is high
- C Drive while unloading
- D Skip the venting
- A Prevent static-electricity sparks during loading and unloading
- B Prevent corrosion
- C Improve fuel mileage
- D Reduce noise
- A It has a tank with rated capacity of 1,000 gallons or more (single tank or aggregate of portable tanks)
- B It carries dry cargo
- C It is a flatbed
- D It carries any liquid
- A Drive normally
- B Use only the parking brake
- C Be especially careful with starts and stops because surge will be severe
- D Skip the brake check
- A A frozen pipe
- B An air-brake line
- C A fuel line
- D A pipe that contains residual liquid product
- A Has less surge than a full tank
- B Has the same surge
- C Has no surge
- D Has more surge than a full or empty tank
- A Use the parking brake harder
- B Coast in neutral
- C Increase speed to clear the descent
- D Look for an escape ramp
- A Sharp and quick
- B Smooth and gradual to minimize side-to-side surge
- C Without signaling
- D At any speed
- A Cause loss of control
- B All of the above
- C Push the vehicle through an intersection
- D Cause rollover
- A Always present, especially with a high center of gravity and liquid surge
- B Only an issue when empty
- C Eliminated by ABS
- D Lower than a flatbed
- A It stops faster
- B There is no effect
- C Surge is severe
- D The vehicle is heavy and stops slower; surge is reduced but mass is high
Study tips for the Florida Tank Vehicle exam
The Tank Vehicle portion of the Florida CDL exam is graded out of the bank of questions the Florida Department of Highway Safety and Motor Vehicles draws from each year. While the exact bank is not published, every question is sourced from the Tank Vehicle chapter of the Florida CDL handbook, which itself is derived from the FMCSA Model Commercial Driver's License Manual. That means studying our practice tests, reading the corresponding handbook chapter, and re-reading the parts you got wrong is genuinely the most efficient route to a first-time pass.
Most successful applicants follow a simple cycle: take the practice test cold, write down every question you missed, open the matching chapter of the official Florida handbook, re-read the section that contains the right answer, then re-take the practice test 24 to 48 hours later. The 24-hour delay matters — sleep is when your brain commits new information to long-term memory, and CDL knowledge questions reward that kind of consolidated learning rather than cramming.
Pay particular attention to questions that include qualifier words like always, never, only, primary, or most. CDL test writers love to flip the right answer with a single qualifier. When two answer choices look almost identical, pay attention to the verb (is it must, should, or may?) and to any numbers (14 days, 100 air miles, 8 hours, 70/8 split). On endorsement tests in particular, watch for trick framing where a true statement about a different endorsement is offered as the "correct" answer to a question that is actually about Tank Vehicle.
Test-day logistics matter too. Bring photo ID, your Social Security card or birth certificate, your medical examiner's certificate (DOT card), and proof of state residency if you haven't already submitted those documents. The Florida Department of Highway Safety and Motor Vehicles will not let you sit for the knowledge exam without your documentation, and most offices charge an additional fee for re-attempts. Arrive early — the wait at most CDL testing offices runs 30 to 60 minutes — and silence your phone before the exam begins.
Finally, keep your General Knowledge fundamentals sharp even when you're focused on the Tank Vehicle exam. Many states administer multiple knowledge tests in a single sitting, and questions on weight definitions (GVWR, GCWR, GAWR), stopping distance, and the pre-trip inspection routine show up across endorsements. If you're unsure on the basics, sit a fresh Florida General Knowledge practice test before scheduling the real exam.
Next steps
Missed more than four questions? Re-read the Tank Vehicle study guide and the matching chapter in the official Florida CDL handbook. Then come back and re-take the test. Once you can score 22 of 25 or higher on three runs in a row, you're in good shape to schedule the real exam at your local Florida Department of Highway Safety and Motor Vehicles office.
Already comfortable with this endorsement? Drill another: FL General Knowledge · FL Air Brakes · FL Combination Vehicles · FL Hazardous Materials · FL Passenger · FL School Bus · FL Doubles / Triples
New to the CDL process in Florida? Read How to apply for a CDL in Florida for the document checklist and step-by-step timeline.