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GA · N Endorsement

Georgia Tank Vehicle CDL Practice Test

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

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
A "manhole cover" on a tanker:
  • A Is a road sign
  • B Provides access to the tank interior and must be sealed during transport
  • C Is part of the brake system
  • D Is for the driver to enter the tank
Correct answer: B
Manhole covers seal the tank; check sealing before driving.
Question 2 of 25
A tanker driver should always:
  • A Skip pre-trip checks of vents and covers
  • B Be ready for surge during stops, starts, and turns
  • C Use the trailer hand valve as a parking brake
  • D Drive at the posted speed regardless of conditions
Correct answer: B
Anticipating surge is the constant tanker mindset.
Question 3 of 25
A tanker driver should plan trips to:
  • A Avoid all freeways
  • B Take the shortest route regardless of grade
  • C Avoid steep grades and sharp curves where possible
  • D Use the parking brake on grades
Correct answer: C
Route planning reduces handling demands on the tanker.
Question 4 of 25
The most common rollover scenario for tankers is:
  • A On straight roads
  • B On a curve or off-ramp at speeds the driver thought were safe
  • C In low-speed maneuvers
  • D In stopped traffic
Correct answer: B
Rollover happens at speeds the driver did not expect would matter; reduce more than you think.
Question 5 of 25
A tanker driver should never:
  • 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
Correct answer: A
All three are violations of safe tanker operation.
Question 6 of 25
When the tank is full of dense liquid (such as oil):
  • 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
Correct answer: B
Full tanks reduce surge but increase total mass and stopping distance.
Question 7 of 25
When a tank is unbaffled (smooth-bore), the driver should:
  • A Drive normally
  • B Use only the parking brake to slow
  • C Allow extra following distance and brake earlier
  • D Disregard surge
Correct answer: C
Extra cushion ahead and earlier braking compensate for severe surge.
Question 8 of 25
A tanker on a long downhill with brake fade should:
  • A Coast in neutral
  • B Use the parking brake harder
  • C Look for an escape ramp
  • D Increase speed to clear the descent
Correct answer: C
Escape ramps are designed for runaway trucks, including tankers.
Question 9 of 25
Liquid surge in a tanker is most extreme in:
  • A Baffled tanks
  • B Compartmented tanks
  • C Empty tanks
  • D Smooth-bore (unbaffled) tanks
Correct answer: D
Smooth-bore tanks have no internal walls to slow the liquid; surge is severe and can push the truck after a stop.
Question 10 of 25
When emergency braking in a tanker:
  • 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
Correct answer: C
Standard emergency braking adapted for tanker surge.
Question 11 of 25
When loading a tank, you should:
  • A Leave room for product expansion (outage)
  • B Overfill if running low on time
  • C Skip the outage if the product is cold
  • D Fill the tank completely
Correct answer: A
Outage prevents pressure damage and spills as product warms.
Question 12 of 25
When loading a smooth-bore tank, the driver should:
  • A Use only the parking brake
  • B Drive normally
  • C Skip the brake check
  • D Be especially careful with starts and stops because surge will be severe
Correct answer: D
Smooth-bore tankers require gentle braking and acceleration to control surge.
Question 13 of 25
A baffled tank:
  • A Has no internal structure
  • B Is illegal in the U.S.
  • C Is divided into separate compartments
  • D Has internal walls with holes that slow liquid movement
Correct answer: D
Baffles reduce front-to-back surge; side-to-side surge is still possible.
Question 14 of 25
When unloading a tanker, you should:
  • A Drive while unloading
  • B Open vents only after pressure is equalized
  • C Open vents while pressure is high
  • D Skip the venting
Correct answer: B
Equalize pressure first to prevent splash, vapor release, and damage.
Question 15 of 25
A tanker that is leaking should:
  • A Drive faster to limit the spill
  • B Continue to the destination
  • C Stop, isolate the area, and notify emergency services and the carrier
  • D Allow product to leak until empty
Correct answer: C
Leak management requires immediate stop and proper notification.
Question 16 of 25
"Outage" in tanker operations means:
  • A A tank leak
  • B The empty space left in a tank for product expansion
  • C Equipment failure
  • D A driver shortage
Correct answer: B
Outage is the unfilled space allowed for liquid expansion in heat.
Question 17 of 25
A tanker driver carrying hazardous materials must also have the:
  • A X endorsement (combination of H and N)
  • B L restriction
  • C P endorsement
  • D H endorsement
Correct answer: A
X endorsement combines Hazmat (H) and Tank (N) for hazmat liquid loads.
Question 18 of 25
When loading or unloading a flammable liquid, the driver must:
  • A Stay within reach of the controls and maintain a clear view of the operation
  • B Walk away to take a break
  • C Stand at least 50 feet away
  • D Allow the receiver to handle everything
Correct answer: A
Continuous attendance is required for safety.
Question 19 of 25
A "wet line" on a tanker is:
  • A A fuel line
  • B A frozen pipe
  • C An air-brake line
  • D A pipe that contains residual liquid product
Correct answer: D
Wet lines contain liquid that can leak from valves; check during inspection.
Question 20 of 25
A tanker driver who must back the truck should:
  • A GOAL — Get Out And Look — and use a spotter when possible
  • B Back at full speed
  • C Skip the visual check
  • D Use only mirrors
Correct answer: A
Backing risk is high; visual check and spotter are key.
Question 21 of 25
A tanker on a slippery road should:
  • A Brake earlier and more gently than normal
  • B Maintain speed
  • C Brake harder to make up for traction loss
  • D Use the parking brake
Correct answer: A
Reduced traction plus surge requires extra care; brake gently and earlier.
Question 22 of 25
When loading product, the driver should:
  • A Allow the receiver to verify later
  • B Skip the verification
  • C Trust the loader to handle it
  • D Verify the correct product, quantity, and compatibility with the tank
Correct answer: D
Driver verification at loading prevents costly errors and contamination.
Question 23 of 25
When operating in heavy traffic with a tanker:
  • A Drive at posted speed
  • B Tailgate to keep position
  • C Maintain extra following distance to allow gentle braking
  • D Cut between cars
Correct answer: C
Extra cushion ahead allows the gentle braking surge requires.
Question 24 of 25
A "tank vehicle" requires the N endorsement when:
  • A It has a tank with rated capacity of 1,000 gallons or more (single tank or aggregate of portable tanks)
  • B It is a flatbed
  • C It carries any liquid
  • D It carries dry cargo
Correct answer: A
N endorsement is required for permanently mounted tanks of 1,000+ gallons or aggregate portable tanks of 1,000+ gallons.
Question 25 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 shorter
  • C It uses air brakes
  • D It is heavier
Correct answer: A
Wind can push and tip a tanker; reduce speed in heavy crosswinds.

Study tips for the Georgia Tank Vehicle exam

The Tank Vehicle portion of the Georgia CDL exam is graded out of the bank of questions the Georgia Department of Driver Services draws from each year. While the exact bank is not published, every question is sourced from the Tank Vehicle chapter of the Georgia 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 Georgia 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 Georgia Department of Driver 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 Georgia 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 Georgia 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 Georgia Department of Driver Services office.

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

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