New York Combination Vehicles CDL Practice Test
Below are 25 exam-style questions for the New York Combination Vehicles CDL knowledge test, modeled on the FMCSA-aligned content used by the New York State 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 Trailer wheels lock more often than drive wheels in panic stops
- B Drive wheels never lock
- C ABS prevents jackknife in all cases
- D Brake balance is irrelevant
- A No specific order is required
- B Lower landing gear, disconnect lines, release fifth wheel, pull tractor away
- C Pull tractor away first, then disconnect lines
- D Release fifth wheel first, then connect lines
- A Failure to grease
- B All of the above
- C Coupling with the trailer too high
- D Backing too fast
- A Use the shoulder
- B Stop traffic by signaling left
- C Stay in the right lane and swing the front of the tractor wide enough to clear the curb without inviting cars to pass on the right
- D Turn from the left lane
- A One second per 10 feet of vehicle length below 40 mph, plus one extra second above 40 mph
- B A vehicle length
- C No specific rule
- D Two car lengths
- A Hydraulic brakes
- B A separate compressor
- C Hand valves
- D Sensors at each wheel that release brake pressure when wheel lockup is detected
- A Be in the stowed (high) position when traveling
- B Be in the low position when traveling
- C Be locked at half-height
- D Be removed
- A Be missing
- B Be loose
- C Be open
- D Be closed around the shank of the kingpin (not on the head)
- A Air leakage in the supply line, low pressure, or a brake-balance issue
- B Cargo placement
- C Engine wear
- D Driver fatigue
- A By the trailer hand valve
- B By setting the red trailer-air-supply valve
- C By pulling out the red trailer-air-supply valve
- D By pushing in the red trailer-air-supply valve
- A Lane positioning at intersections
- B The trailer following the same path as the tractor in a straight line
- C The fuel mileage
- D Cargo placement
- A Loaded last
- B First (closest to the tractor)
- C Last
- D Either position is fine
- A Drains the wet tank
- B Operates the parking brake only
- C Sends supply air to the trailer reservoirs and controls the trailer emergency brakes
- D Carries electrical signals
- A Tied with rope
- B Locked and the safety latch in place after coupling
- C Removed before driving
- D Released and visible after coupling
- A Both for parking and to prevent jackknife
- B Test the trailer brakes
- C Apply trailer brakes momentarily
- D Hold the vehicle when parking
- A Is used to convert a semitrailer into a full trailer for towing in combination
- B Is used only when triple-towing
- C Is part of the tractor
- D Replaces the fifth wheel on the tractor
- A Back at full speed
- B GOAL — Get Out And Look — and walk around the trailer first
- C Use only mirrors
- D Have the dispatcher in the cab
- A Release the brakes to allow the trailer wheels to roll again, then steer
- B Apply the trailer hand valve harder
- C Disconnect the air supply
- D Accelerate
- A Always back to the right
- B Back without using mirrors
- C Back as fast as practical
- D Back to the left whenever possible because you can see better
- A The trailer wheels follow a tighter arc than the tractor wheels in a turn
- B Sliding sideways
- C Loss of traction
- D Driving off the road
- A Loose lug nuts only
- B Engine oil leaks
- C Cargo placement
- D Cuts, abrasions, and worn seals
- A Always halfway extended
- B Fully raised before driving
- C Disconnected before driving
- D Lowered to the ground while driving
- A Cargo movement
- B Driving too fast for conditions and/or too closely
- C Engine failure
- D Worn out tires
- A Pulling, sticking, or unusual feel as you apply the brakes
- B Smoke from the cab
- C Engine knocking
- D Steering wander only
- A Swing wide to the right first to avoid hitting the curb
- B Stop in the middle of the turn
- C Swing left then right
- D Keep the cab close to the curb and swing the front out so following cars cannot squeeze beside you on the right
Study tips for the New York Combination Vehicles exam
The Combination Vehicles portion of the New York CDL exam is graded out of the bank of questions the New York State Department of Motor Vehicles draws from each year. While the exact bank is not published, every question is sourced from the Combination Vehicles chapter of the New York 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 New York 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 Combination Vehicles.
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 New York State 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 Combination Vehicles 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 New York General Knowledge practice test before scheduling the real exam.
Next steps
Missed more than four questions? Re-read the Combination Vehicles study guide and the matching chapter in the official New York 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 New York State Department of Motor Vehicles office.
Already comfortable with this endorsement? Drill another: NY General Knowledge · NY Air Brakes · NY Hazardous Materials · NY Passenger · NY School Bus · NY Tank Vehicle · NY Doubles / Triples
New to the CDL process in New York? Read How to apply for a CDL in New York for the document checklist and step-by-step timeline.