Louisiana Tank Vehicle CDL Practice Test
Below are 25 exam-style questions for the Louisiana Tank Vehicle CDL knowledge test, modeled on the FMCSA-aligned content used by the Louisiana Office of 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 Use the trailer hand valve
- B Park on the shoulder without securing
- C Leave the truck in gear without brakes
- D Set both parking brakes and chock the wheels if necessary
- A 100 feet
- B Anywhere outside the cab
- C 25 feet of the vehicle
- D 10 feet of the vehicle
- A All of the above
- B Manhole covers and vents
- C Special pump and valve systems
- D The tank shell for corrosion or damage
- A H endorsement
- B L restriction
- C X endorsement (combination of H and N)
- D P endorsement
- A Fill the tank completely
- B Overfill if running low on time
- C Skip the outage if the product is cold
- D Leave room for product expansion (outage)
- A Higher rollover risk
- B Easier handling
- C No change in handling
- D Faster acceleration
- A Bond only after the loading is complete
- B Bond and ground before opening the manhole
- C Disconnect the bonding mid-loading
- D Skip the bonding if the load is small
- A Smooth and gradual to minimize side-to-side surge
- B Without signaling
- C At any speed
- D Sharp and quick
- A GOAL — Get Out And Look — and use a spotter when possible
- B Use only mirrors
- C Skip the visual check
- D Back at full speed
- A There is no effect
- B The vehicle is heavy and stops slower; surge is reduced but mass is high
- C Surge is severe
- D It stops faster
- A Is above the posted advisory
- B Is below the posted advisory for cars
- C Is whatever feels safe
- D Equals the posted speed limit
- A At least 5 mph below the posted curve speed when loaded
- B In neutral
- C Above posted speed
- D At posted speed
- A Avoid steep grades and sharp curves where possible
- B Use the parking brake on grades
- C Avoid all freeways
- D Take the shortest route regardless of grade
- A Look for an escape ramp
- B Use the parking brake harder
- C Coast in neutral
- D Increase speed to clear the descent
- A Push you forward after you stop
- B Have no effect
- C Improve traction
- D Help you stop sooner
- A Use the trailer hand valve as a parking brake
- B Be ready for surge during stops, starts, and turns
- C Drive at the posted speed regardless of conditions
- D Skip pre-trip checks of vents and covers
- A All of the above
- B Skip outage
- C Disregard surge
- D Use the trailer hand valve as a parking brake
- A Skip the verification
- B Allow the receiver to verify later
- C Verify the correct product, quantity, and compatibility with the tank
- D Trust the loader to handle it
- A Brake within the curve
- B Use the parking brake
- C Reduce speed before the ramp and watch for tightening curves
- D Maintain freeway speed
- A A driver shortage
- B Equipment failure
- C A tank leak
- D The empty space left in a tank for product expansion
- A It uses air brakes
- B Its high center of gravity and large surface area increase wind effects
- C It is heavier
- D It is shorter
- A Maintain extra following distance to allow gentle braking
- B Tailgate to keep position
- C Cut between cars
- D Drive at posted speed
- A Skip the inspection
- B Allow the shipper to drive
- C Drive immediately
- D Check fittings and covers for leaks before leaving the loading site
- A Always present, especially with a high center of gravity and liquid surge
- B Eliminated by ABS
- C Only an issue when empty
- D Lower than a flatbed
- A Has less surge than a full tank
- B Has no surge
- C Has more surge than a full or empty tank
- D Has the same surge
Study tips for the Louisiana Tank Vehicle exam
The Tank Vehicle portion of the Louisiana CDL exam is graded out of the bank of questions the Louisiana Office of Motor Vehicles draws from each year. While the exact bank is not published, every question is sourced from the Tank Vehicle chapter of the Louisiana 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 Louisiana 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 Louisiana Office of 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 Louisiana 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 Louisiana 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 Louisiana Office of Motor Vehicles office.
Already comfortable with this endorsement? Drill another: LA General Knowledge · LA Air Brakes · LA Combination Vehicles · LA Hazardous Materials · LA Passenger · LA School Bus · LA Doubles / Triples
New to the CDL process in Louisiana? Read How to apply for a CDL in Louisiana for the document checklist and step-by-step timeline.