Minnesota Tank Vehicle CDL Practice Test
Below are 25 exam-style questions for the Minnesota Tank Vehicle CDL knowledge test, modeled on the FMCSA-aligned content used by the Minnesota Driver and Vehicle Services. 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 Skip the safety check
- B Mix freely
- C Verify product compatibility and follow safety procedures
- D Allow the receiver to add chemicals
- A Push the vehicle through an intersection
- B All of the above
- C Cause loss of control
- D Cause rollover
- A Allow the receiver to handle everything
- B Verify the receiver is ready and the receiving tank has capacity
- C Skip the verification
- D Begin unloading immediately
- A Equipment failure
- B The empty space left in a tank for product expansion
- C A tank leak
- D A driver shortage
- A Brake within the curve
- B Use the parking brake
- C Maintain freeway speed
- D Reduce speed before the ramp and watch for tightening curves
- A Is for the driver to enter the tank
- B Provides access to the tank interior and must be sealed during transport
- C Is part of the brake system
- D Is a road sign
- A Compartmented tanks
- B Baffled tanks
- C Smooth-bore (unbaffled) tanks
- D Empty tanks
- A Drive normally
- B Disregard surge
- C Use only the parking brake to slow
- D Allow extra following distance and brake earlier
- A Leave brakes off
- B Set only the tractor parking brake
- C Set both tractor and trailer parking brakes and chock if necessary
- D Use the trailer hand valve
- A Skip outage
- B Use the trailer hand valve as a parking brake
- C All of the above
- D Disregard surge
- A Use only the parking brake
- B Coast in neutral
- C Use stab braking on non-ABS, full pressure on ABS, and be ready for surge
- D Pump rapidly
- A Disengage the clutch
- B Release the wheel
- C Hold the steering wheel firmly because the load may push you forward
- D Apply the parking brake immediately
- A Lower than a flatbed
- B Eliminated by ABS
- C Always present, especially with a high center of gravity and liquid surge
- D Only an issue when empty
- A Surge is severe
- B It stops faster
- C There is no effect
- D The vehicle is heavy and stops slower; surge is reduced but mass is high
- A Be ready for surge during stops, starts, and turns
- B Use the trailer hand valve as a parking brake
- C Drive at the posted speed regardless of conditions
- D Skip pre-trip checks of vents and covers
- A Open all vents
- B Wait for the carrier to instruct
- C Refer to the ERG and shipping papers for product-specific guidance
- D Rely on memory only
- A Back at full speed
- B Use only mirrors
- C Skip the visual check
- D GOAL — Get Out And Look — and use a spotter when possible
- A Maintain speed
- B Brake harder to make up for traction loss
- C Use the parking brake
- D Brake earlier and more gently than normal
- A Use parking brake intermittently
- B Coast in neutral
- C Be in low gear and use steady moderate brake application
- D Increase speed
- A All of the above
- B Drive over the maximum allowable speed for the load
- C Skip a pre-trip inspection
- D Disregard outage requirements
- A Drive at posted speed
- B Maintain extra following distance to allow gentle braking
- C Cut between cars
- D Tailgate to keep position
- A Drive while unloading
- B Open vents while pressure is high
- C Open vents only after pressure is equalized
- D Skip the venting
- A Push you forward after you stop
- B Have no effect
- C Improve traction
- D Help you stop sooner
- A No change in handling
- B Easier handling
- C Higher rollover risk
- D Faster acceleration
- A Verify the correct product, quantity, and compatibility with the tank
- B Trust the loader to handle it
- C Skip the verification
- D Allow the receiver to verify later
Study tips for the Minnesota Tank Vehicle exam
The Tank Vehicle portion of the Minnesota CDL exam is graded out of the bank of questions the Minnesota Driver and Vehicle Services draws from each year. While the exact bank is not published, every question is sourced from the Tank Vehicle chapter of the Minnesota 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 Minnesota 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 Minnesota Driver and Vehicle Services 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 Minnesota 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 Minnesota 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 Minnesota Driver and Vehicle Services office.
Already comfortable with this endorsement? Drill another: MN General Knowledge · MN Air Brakes · MN Combination Vehicles · MN Hazardous Materials · MN Passenger · MN School Bus · MN Doubles / Triples
New to the CDL process in Minnesota? Read How to apply for a CDL in Minnesota for the document checklist and step-by-step timeline.