Nebraska Tank Vehicle CDL Practice Test
Below are 25 exam-style questions for the Nebraska Tank Vehicle CDL knowledge test, modeled on the FMCSA-aligned content used by the Nebraska Department 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 It carries any liquid
- B It has a tank with rated capacity of 1,000 gallons or more (single tank or aggregate of portable tanks)
- C It is a flatbed
- D It carries dry cargo
- A Reduce speed before the ramp and watch for tightening curves
- B Brake within the curve
- C Use the parking brake
- D Maintain freeway speed
- 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 Allow extra following distance and brake earlier
- B Use only the parking brake to slow
- C Drive normally
- D Disregard surge
- A It is shorter
- B Its high center of gravity and large surface area increase wind effects
- C It uses air brakes
- D It is heavier
- A 10 feet of the vehicle
- B 25 feet of the vehicle
- C 100 feet
- D Anywhere outside the cab
- A Honk and proceed
- B Use the inside lane only
- C Maintain posted speed
- D Slow well below posted speed and watch for surge as you change direction
- 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 All of the above
- B Cause loss of control
- C Cause rollover
- D Push the vehicle through an intersection
- A Allow the receiver to verify later
- B Trust the loader to handle it
- C Skip the verification
- D Verify the correct product, quantity, and compatibility with the tank
- A X endorsement (combination of H and N)
- B H endorsement
- C P endorsement
- D L restriction
- A In low-speed maneuvers
- B On a curve or off-ramp at speeds the driver thought were safe
- C In stopped traffic
- D On straight roads
- A Improve fuel mileage
- B Reduce noise
- C Prevent corrosion
- D Prevent static-electricity sparks during loading and unloading
- A Mix freely
- B Allow the receiver to add chemicals
- C Skip the safety check
- D Verify product compatibility and follow safety procedures
- A Look for an escape ramp
- B Use the parking brake harder
- C Increase speed to clear the descent
- D Coast in neutral
- A Disconnect the bonding mid-loading
- B Bond and ground before opening the manhole
- C Skip the bonding if the load is small
- D Bond only after the loading is complete
- A At any speed
- B Sharp and quick
- C Smooth and gradual to minimize side-to-side surge
- D Without signaling
- A Use the parking brake on grades
- B Avoid all freeways
- C Take the shortest route regardless of grade
- D Avoid steep grades and sharp curves where possible
- A Easier handling
- B Higher rollover risk
- C Faster acceleration
- D No change in handling
- A Provides access to the tank interior and must be sealed during transport
- B Is for the driver to enter the tank
- C Is part of the brake system
- D Is a road sign
- A Skip a pre-trip inspection
- B Disregard outage requirements
- C Drive over the maximum allowable speed for the load
- D All of the above
- A Baffled tanks
- B Empty tanks
- C Smooth-bore (unbaffled) tanks
- D Compartmented tanks
- A Release the wheel
- B Disengage the clutch
- C Hold the steering wheel firmly because the load may push you forward
- D Apply the parking brake immediately
- A A frozen pipe
- B An air-brake line
- C A pipe that contains residual liquid product
- D A fuel line
- A Drive while unloading
- B Skip the venting
- C Open vents while pressure is high
- D Open vents only after pressure is equalized
Study tips for the Nebraska Tank Vehicle exam
The Tank Vehicle portion of the Nebraska CDL exam is graded out of the bank of questions the Nebraska Department 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 Nebraska 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 Nebraska 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 Nebraska Department 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 Nebraska 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 Nebraska 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 Nebraska Department of Motor Vehicles office.
Already comfortable with this endorsement? Drill another: NE General Knowledge · NE Air Brakes · NE Combination Vehicles · NE Hazardous Materials · NE Passenger · NE School Bus · NE Doubles / Triples
New to the CDL process in Nebraska? Read How to apply for a CDL in Nebraska for the document checklist and step-by-step timeline.