Georgia Doubles / Triples CDL Practice Test
Below are 25 exam-style questions for the Georgia Doubles / Triples 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.
- A Two trailers behind one tractor
- B A bus with two sections
- C Two tractors pulling one trailer
- D A trailer with two axles
- A A combination with a second trailer that has a kingpin attached to the first trailer
- B A type of bus
- C A type of car carrier
- D A train carrying buses
- A Skip the floor inspection
- B Allow damage
- C Look for damage that could affect cargo securement or trailer integrity
- D Inspect once a year
- A Is a single hook
- B Is electrical only
- C Includes a pintle hook on the front and a fifth wheel on the back
- D Is the same as a tractor fifth wheel
- A Allow the dolly to roll freely
- B Skip the air check
- C Couple without verifying
- D Verify the dolly's air tank has air pressure and lock the dolly's parking brake before backing under the second trailer
- A Can maintain normal speed
- B Should change lanes frequently
- C Should brake hard
- D Should be driven slowly with extra following distance
- A Brake hard
- B Increase speed
- C Continue normally
- D Slow down and reduce steering input — rollover is imminent
- A It is harder to roll over
- B Better fuel mileage
- C No change in handling
- D It can sway and lift more easily; drive carefully
- A Leave brakes off
- B Set parking brakes on the tractor and on the trailers
- C Use the trailer hand valve
- D Set only the tractor parking brake
- A State and federal route restrictions
- B All of the above
- C Coupling and uncoupling procedures
- D How to inspect each connection point
- A Any lane
- B The left lane
- C The right lane on multilane highways when possible
- D The shoulder
- A All of the above
- B Lane changes
- C Wind, especially crosswinds and from passing trucks
- D Cargo placement
- A Are required only on triples
- B Carry electrical signals
- C Provide a backup connection in case the primary coupling fails
- D Are decorative
- A Drive as if it were a single trailer
- B Skip the pre-trip
- C Use the trailer hand valve as a parking brake
- D Be aware of the increased complexity of the equipment and operate accordingly
- A The second trailer's emergency brakes apply automatically
- B Nothing happens
- C The first trailer accelerates
- D The tractor brakes apply
- A A driver punishing the truck
- B A loose load shifting
- C The rear trailer swinging more than the tractor in turns or lane changes
- D A tire blowout
- A Only the first trailer brakes
- B Only the rear trailer brakes
- C All trailers should brake together if the system is functioning correctly
- D Brakes are uneven
- A Steer sharply to correct
- B Brake hard
- C Accelerate
- D Reduce speed gradually and avoid sudden steering inputs
- A Off-tracking is more pronounced; swing wider than for a single trailer
- B Use the left lane
- C Off-tracking is less than a single trailer
- D No off-tracking occurs
- A Signal early and change smoothly to minimize swing
- B Change at high speed
- C Change quickly without signaling
- D Change in heavy traffic
- A Use the spare
- B Continue with damaged tires
- C Replace before operating
- D Ignore the damage
- A No air-brake system
- B Mechanical brakes only
- C Air lines from tractor to first trailer to dolly to second trailer
- D Air lines only on the tractor
- A Brake hard
- B Accelerate
- C Reduce speed gradually and avoid sudden steering inputs
- D Steer sharply
- A Allow loose engagement
- B Skip the safety chains
- C Allow chains to drag
- D Verify it is properly engaged and safety chains are attached
- A Avoid restricted roads and minimize sharp curves and steep grades
- B Avoid freeways
- C Drive only at night
- D Take the shortest route regardless
Study tips for the Georgia Doubles / Triples exam
The Doubles / Triples 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 Doubles / Triples 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 Doubles / Triples.
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 Doubles / Triples 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 Doubles / Triples 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 Tank Vehicle
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.