Arkansas Doubles / Triples CDL Practice Test
Below are 25 exam-style questions for the Arkansas Doubles / Triples CDL knowledge test, modeled on the FMCSA-aligned content used by the Arkansas Office 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 Last (furthest from the tractor)
- B In the middle
- C First (closest to the tractor)
- D It does not matter
- A Prevents accidental release of the hook
- B Is electrical
- C Is decorative
- D Is the same as a fifth wheel jaw
- A Signal early and change smoothly to minimize swing
- B Change at high speed
- C Change in heavy traffic
- D Change quickly without signaling
- A Skip the floor inspection
- B Inspect once a year
- C Look for damage that could affect cargo securement or trailer integrity
- D Allow damage
- A Dolly air-tank pressure
- B Pintle hooks and safety chains
- C Glad hands and seals at every connection
- D All of the above
- A The first trailer accelerates
- B The tractor brakes apply
- C The second trailer's emergency brakes apply automatically
- D Nothing happens
- A Verify the fifth wheel locks around the kingpin and test by tugging gently
- B Skip the lock verification
- C Trust visual inspection only
- D Couple at high speed
- A Drive only at night
- B Avoid restricted roads and minimize sharp curves and steep grades
- C Avoid freeways
- D Take the shortest route regardless
- A Cargo placement
- B All of the above
- C Lane changes
- D Wind, especially crosswinds and from passing trucks
- A Is the same as a tractor fifth wheel
- B Is electrical only
- C Includes a pintle hook on the front and a fifth wheel on the back
- D Is a single hook
- A Plan the turn carefully and use multiple lanes if necessary
- B Turn sharply
- C Skip the planning
- D Maintain speed
- A Use only mirrors
- B Avoid it; if necessary, uncouple to a single trailer first
- C Have a passenger guide you
- D Back at full speed
- A Skip the safety chains
- B Allow chains to drag
- C Verify it is properly engaged and safety chains are attached
- D Allow loose engagement
- A Only the first trailer brakes
- B Brakes are uneven
- C All trailers should brake together if the system is functioning correctly
- D Only the rear trailer brakes
- A Brake hard
- B Continue normally
- C Slow down and reduce steering input — rollover is imminent
- D Increase speed
- A A bus with two sections
- B Two trailers behind one tractor
- C Two tractors pulling one trailer
- D A trailer with two axles
- A Trailer length only
- B Tractor length only
- C Total combination length when turning, parking, and changing lanes
- D No specific length
- A Couple without verifying
- B Skip the air check
- C Verify the dolly's air tank has air pressure and lock the dolly's parking brake before backing under the second trailer
- D Allow the dolly to roll freely
- A All of the above
- B Reduced visibility around the second trailer
- C Increased rollover risk in curves
- D Crosswind sensitivity
- A Once a year
- B Before pulling away from the coupling site
- C Only at the destination
- D Never; the dispatcher tests them
- A The right lane on multilane highways when possible
- B Any lane
- C The shoulder
- D The left lane
- A Brake within the curve
- B Maintain speed
- C Slow down before the curve to reduce rollover risk and trailer swing
- D Increase speed
- A A trailer for transporting animals
- B A tractor only
- C A converter dolly
- D A short trailer commonly used in doubles and triples
- A Off-tracking is less than a single trailer
- B Off-tracking is more pronounced; swing wider than for a single trailer
- C Use the left lane
- D No off-tracking occurs
- A Brake hard
- B Reduce speed gradually and avoid sudden steering inputs
- C Accelerate
- D Steer sharply to correct
Study tips for the Arkansas Doubles / Triples exam
The Doubles / Triples portion of the Arkansas CDL exam is graded out of the bank of questions the Arkansas Office 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 Arkansas 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 Arkansas 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 Arkansas Office 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 Arkansas 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 Arkansas 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 Arkansas Office of Driver Services office.
Already comfortable with this endorsement? Drill another: AR General Knowledge · AR Air Brakes · AR Combination Vehicles · AR Hazardous Materials · AR Passenger · AR School Bus · AR Tank Vehicle
New to the CDL process in Arkansas? Read How to apply for a CDL in Arkansas for the document checklist and step-by-step timeline.