Montana Tank Vehicle CDL Practice Test
Below are 25 exam-style questions for the Montana Tank Vehicle CDL knowledge test, modeled on the FMCSA-aligned content used by the Montana Motor Vehicle Division. 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 Allow the receiver to verify later
- B Skip the verification
- C Verify the correct product, quantity, and compatibility with the tank
- D Trust the loader to handle it
- A At posted speed
- B In neutral
- C Above posted speed
- D At least 5 mph below the posted curve speed when loaded
- A Always present, especially with a high center of gravity and liquid surge
- B Only an issue when empty
- C Lower than a flatbed
- D Eliminated by ABS
- A Equals the posted speed limit
- B Is above the posted advisory
- C Is below the posted advisory for cars
- D Is whatever feels safe
- 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 Continue to the destination
- B Drive faster
- C Try to repair the leak yourself
- D Stop in a safe location, isolate the area, and notify the carrier and authorities
- A Permanently mounted to the vehicle
- B All of the above can be a cargo tank
- C A portable tank set on the vehicle
- D A trailer-mounted tank
- A P endorsement
- B H endorsement
- C X endorsement (combination of H and N)
- D L restriction
- A Easier handling
- B Higher rollover risk
- C No change in handling
- D Faster acceleration
- A Sharp and quick
- B Smooth and gradual to minimize side-to-side surge
- C At any speed
- D Without signaling
- A Refer to the ERG and shipping papers for product-specific guidance
- B Open all vents
- C Wait for the carrier to instruct
- D Rely on memory only
- A It is heavier
- B It uses air brakes
- C It is shorter
- D Its high center of gravity and large surface area increase wind effects
- A Cause rollover
- B Cause loss of control
- C Push the vehicle through an intersection
- D All of the above
- A Maintain pressure on the brakes
- B Coast in neutral
- C Use the escape ramp
- D Increase speed
- A Baffled tanks
- B Smooth-bore (unbaffled) tanks
- C Empty tanks
- D Compartmented tanks
- 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 Drive over the maximum allowable speed for the load
- B Skip a pre-trip inspection
- C All of the above
- D Disregard outage requirements
- A Be especially careful with starts and stops because surge will be severe
- B Skip the brake check
- C Drive normally
- D Use only the parking brake
- A Brake harder to make up for traction loss
- B Brake earlier and more gently than normal
- C Use the parking brake
- D Maintain speed
- A Surge is severe
- B The vehicle is heavy and stops slower; surge is reduced but mass is high
- C It stops faster
- D There is no effect
- A Use parking brake intermittently
- B Coast in neutral
- C Be in low gear and use steady moderate brake application
- D Increase speed
- A Pull over and re-check the load and securement
- B Take a break only
- C Drive without checking
- D Speed up
- A It is a flatbed
- B It has a tank with rated capacity of 1,000 gallons or more (single tank or aggregate of portable tanks)
- C It carries dry cargo
- D It carries any liquid
- A All of the above
- B Special pump and valve systems
- C Manhole covers and vents
- D The tank shell for corrosion or damage
- A All of the above
- B Vents and valves
- C Pump and unloading equipment
- D Tank shell and covers
Study tips for the Montana Tank Vehicle exam
The Tank Vehicle portion of the Montana CDL exam is graded out of the bank of questions the Montana Motor Vehicle Division draws from each year. While the exact bank is not published, every question is sourced from the Tank Vehicle chapter of the Montana 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 Montana 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 Montana Motor Vehicle Division 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 Montana 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 Montana 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 Montana Motor Vehicle Division office.
Already comfortable with this endorsement? Drill another: MT General Knowledge · MT Air Brakes · MT Combination Vehicles · MT Hazardous Materials · MT Passenger · MT School Bus · MT Doubles / Triples
New to the CDL process in Montana? Read How to apply for a CDL in Montana for the document checklist and step-by-step timeline.