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Nevada Tank Vehicle CDL Practice Test

Below are 25 exam-style questions for the Nevada Tank Vehicle CDL knowledge test, modeled on the FMCSA-aligned content used by the Nevada 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.

Heads up: this is a study tool, not a graded exam. Cover the answer with your hand or a sheet of paper for an honest practice run, then re-read the explanations for any questions you missed. Aim for 22 out of 25 or better, three times in a row, before scheduling the real exam.
Question 1 of 25
When loading or unloading a flammable liquid, the driver must:
  • A Allow the receiver to handle everything
  • B Walk away to take a break
  • C Stay within reach of the controls and maintain a clear view of the operation
  • D Stand at least 50 feet away
Correct answer: C
Continuous attendance is required for safety.
Question 2 of 25
A high center of gravity in a tanker means:
  • A Faster acceleration
  • B Easier handling
  • C No change in handling
  • D Higher rollover risk
Correct answer: D
High CG combined with liquid surge dramatically increases rollover risk.
Question 3 of 25
A tank vehicle's rollover risk is:
  • A Eliminated by ABS
  • B Lower than a flatbed
  • C Only an issue when empty
  • D Always present, especially with a high center of gravity and liquid surge
Correct answer: D
High CG and surge create persistent rollover risk; ABS does not eliminate it.
Question 4 of 25
A tanker driver who must back the truck should:
  • A Skip the visual check
  • B Back at full speed
  • C GOAL — Get Out And Look — and use a spotter when possible
  • D Use only mirrors
Correct answer: C
Backing risk is high; visual check and spotter are key.
Question 5 of 25
A compartmented tank:
  • A Has separate sections for different products
  • B Has only one section
  • C Has no baffles
  • D Is the same as smooth-bore
Correct answer: A
Compartments allow separate products and limit surge within each compartment.
Question 6 of 25
When negotiating a roundabout in a tanker:
  • A Use the inside lane only
  • B Honk and proceed
  • C Maintain posted speed
  • D Slow well below posted speed and watch for surge as you change direction
Correct answer: D
Roundabouts combine direction changes and curves; tankers must slow more.
Question 7 of 25
When unloading a tanker, you should:
  • A Open vents while pressure is high
  • B Open vents only after pressure is equalized
  • C Drive while unloading
  • D Skip the venting
Correct answer: B
Equalize pressure first to prevent splash, vapor release, and damage.
Question 8 of 25
Bonding and grounding for flammable liquids is intended to:
  • A Prevent corrosion
  • B Prevent static-electricity sparks during loading and unloading
  • C Improve fuel mileage
  • D Reduce noise
Correct answer: B
Bonding equalizes electrical potential; grounding sends static to earth.
Question 9 of 25
When you discover a leak in the tank during the trip:
  • A Drive faster
  • B Stop in a safe location, isolate the area, and notify the carrier and authorities
  • C Continue to the destination
  • D Try to repair the leak yourself
Correct answer: B
Leak procedures require stop, isolate, and notify.
Question 10 of 25
Tanker drivers should be especially careful when:
  • A Stopping or starting in traffic
  • B All of the above
  • C On curves, ramps, and slick surfaces
  • D The tank is partially loaded and surge is highest
Correct answer: B
All three situations magnify tanker handling challenges.
Question 11 of 25
Lane changes in a tanker should be:
  • A Sharp and quick
  • B At any speed
  • C Smooth and gradual to minimize side-to-side surge
  • D Without signaling
Correct answer: C
Smooth maneuvers reduce surge that could affect handling.
Question 12 of 25
When loading a smooth-bore tank, the driver should:
  • A Skip the brake check
  • B Be especially careful with starts and stops because surge will be severe
  • C Drive normally
  • D Use only the parking brake
Correct answer: B
Smooth-bore tankers require gentle braking and acceleration to control surge.
Question 13 of 25
When loading product, the driver should:
  • A Allow the receiver to verify later
  • B Trust the loader to handle it
  • C Verify the correct product, quantity, and compatibility with the tank
  • D Skip the verification
Correct answer: C
Driver verification at loading prevents costly errors and contamination.
Question 14 of 25
When emergency braking in a tanker:
  • A Use only the parking brake
  • B Pump rapidly
  • C Coast in neutral
  • D Use stab braking on non-ABS, full pressure on ABS, and be ready for surge
Correct answer: D
Standard emergency braking adapted for tanker surge.
Question 15 of 25
A tanker that is leaking should:
  • A Stop, isolate the area, and notify emergency services and the carrier
  • B Continue to the destination
  • C Allow product to leak until empty
  • D Drive faster to limit the spill
Correct answer: A
Leak management requires immediate stop and proper notification.
Question 16 of 25
A tanker is more sensitive to wind because:
  • A Its high center of gravity and large surface area increase wind effects
  • B It is heavier
  • C It uses air brakes
  • D It is shorter
Correct answer: A
Wind can push and tip a tanker; reduce speed in heavy crosswinds.
Question 17 of 25
When entering a freeway off-ramp in a tanker:
  • A Use the parking brake
  • B Maintain freeway speed
  • C Reduce speed before the ramp and watch for tightening curves
  • D Brake within the curve
Correct answer: C
Off-ramps tighten and surprise unprepared tanker drivers.
Question 18 of 25
When making a sudden stop in a tanker, the load can:
  • A Cause rollover
  • B Cause loss of control
  • C Push the vehicle through an intersection
  • D All of the above
Correct answer: D
Surge consequences include all three; brake earlier and harder than expected.
Question 19 of 25
A tanker on a long downhill with brake fade should:
  • A Increase speed to clear the descent
  • B Coast in neutral
  • C Use the parking brake harder
  • D Look for an escape ramp
Correct answer: D
Escape ramps are designed for runaway trucks, including tankers.
Question 20 of 25
The most common rollover scenario for tankers is:
  • A In stopped traffic
  • B On straight roads
  • C In low-speed maneuvers
  • D On a curve or off-ramp at speeds the driver thought were safe
Correct answer: D
Rollover happens at speeds the driver did not expect would matter; reduce more than you think.
Question 21 of 25
After about 25 miles, a tanker driver should:
  • A Drive without checking
  • B Pull over and re-check the load and securement
  • C Speed up
  • D Take a break only
Correct answer: B
Heat, vibration, and load shift can loosen what was tight at the yard.
Question 22 of 25
When the tank is full of dense liquid (such as oil):
  • A It stops faster
  • B Surge is severe
  • C The vehicle is heavy and stops slower; surge is reduced but mass is high
  • D There is no effect
Correct answer: C
Full tanks reduce surge but increase total mass and stopping distance.
Question 23 of 25
A tanker driver loading at a self-serve facility should:
  • A Begin loading without checking
  • B Follow site procedures and verify equipment before loading
  • C Allow another driver to load for them
  • D Skip the site procedures
Correct answer: B
Site procedures are designed to prevent spills and ensure safe loading.
Question 24 of 25
When you stop quickly in a tanker, you should:
  • A Disengage the clutch
  • B Apply the parking brake immediately
  • C Hold the steering wheel firmly because the load may push you forward
  • D Release the wheel
Correct answer: C
Surge forces require firm steering control during and after the stop.
Question 25 of 25
A tanker driver should inspect:
  • A Manhole covers and vents
  • B The tank shell for corrosion or damage
  • C All of the above
  • D Special pump and valve systems
Correct answer: C
Tank-specific inspection covers covers, vents, valves, and shell condition.

Study tips for the Nevada Tank Vehicle exam

The Tank Vehicle portion of the Nevada CDL exam is graded out of the bank of questions the Nevada 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 Nevada 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 Nevada 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 Nevada 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 Nevada 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 Nevada 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 Nevada Department of Motor Vehicles office.

Already comfortable with this endorsement? Drill another: NV General Knowledge · NV Air Brakes · NV Combination Vehicles · NV Hazardous Materials · NV Passenger · NV School Bus · NV Doubles / Triples

New to the CDL process in Nevada? Read How to apply for a CDL in Nevada for the document checklist and step-by-step timeline.