Montana General Knowledge CDL Practice Test
Below are 25 exam-style questions for the Montana General Knowledge CDL knowledge test, modeled on the FMCSA-aligned content used by the Montana Motor Vehicle Division. 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 Test the service brake then the parking brake
- B Test the low-air warning then drive
- C Test the parking brake then the service brake
- D Test only the air-leak rate
- A Steer sharply in the opposite direction
- B Release the brake, let the wheels turn freely, and let the vehicle slow down
- C Brake hard immediately
- D Accelerate
- A Coolant level is above LOW and the cap is secure
- B All of the above
- C Power steering fluid is at the proper level
- D Engine oil level is safe to operate
- A No federal consequence
- B A fine only
- C A warning
- D CDL disqualification for at least one year for a first offense
- A Triples
- B Doubles
- C Quadruples
- D Stays the same
- A Half the range of your low-beam headlights
- B Whatever speed feels safe
- C The range of your low-beam headlights
- D The full range of high-beam headlights when in use
- A 4 seconds
- B 10 seconds
- C 1 second
- D 6 seconds
- A Use the four-way flashers instead of signals at intersections
- B Signal only when other vehicles are present
- C Signal only at the moment you start turning
- D Signal early, signal continuously, and cancel after the turn
- A One reflective triangle within 10 feet
- B Three reflective triangles: 10 ft, 100 ft, and 200 ft toward approaching traffic
- C A flare burning constantly
- D A spotter walking 1,000 ft up the road
- A 4/32 inch
- B 6/32 inch
- C 1/32 inch
- D 2/32 inch
- A Annoying passengers
- B Wasting fuel only
- C Powertrain wear and possible loss of control on slippery surfaces
- D Engine damage
- A Checking the engine compartment
- B Walking around the vehicle and checking lights
- C Adjusting the trailer brakes individually
- D Testing the service and parking brakes
- A To save fuel
- B On vehicles with ABS
- C On vehicles without ABS, to keep them straight in an emergency
- D On wet roads only
- A Fills the trailer floor edge to edge
- B Is loaded in the order it will be delivered
- C Looks neat from the outside
- D Cannot shift on stops, starts, or turns and is within axle weight limits
- A Brake-lag distance only
- B Speed times weight
- C Reaction distance only
- D Perception distance + reaction distance + brake-lag distance + braking distance
- A Tires are over-inflated
- B Tires lose contact with the road on a film of water
- C You brake hard on dry pavement
- D Roads are dry but hot
- A Only on the highway
- B Whenever you feel like it
- C When you are stopped or moving slowly enough to be a hazard
- D Only at night
- A Stay in high gear
- B Coast in neutral
- C Select a lower gear before starting down
- D Use the parking brake intermittently
- A Make smooth steering and braking inputs
- B Increase following distance
- C All of the above
- D Slow down
- A A type of cargo strap
- B A trailer hitch component
- C A fuel-saving switch
- D A low-air pressure warning device that drops a flag in front of the driver
- A It is illegal
- B It increases fuel use
- C It causes the engine to overheat
- D It can let poisonous carbon monoxide into the cab
- A 10,001 lbs or more
- B 40,000 lbs or more
- C 26,001 lbs or more
- D 20,000 lbs or more
- A Applying the brakes as hard as possible without locking the wheels
- B Locking the wheels
- C Coasting in neutral
- D Pumping the brakes hard and fast
- A Gross Vehicle Weight Rating
- B General Vehicle Weight Reading
- C Gross Vehicle Width Rating
- D Government Vehicle Weight Regulation
- A Always come to a full stop regardless of traffic
- B Cross at maximum speed to get over quickly
- C Honk and proceed
- D Slow down, look, listen, and be prepared to stop
Study tips for the Montana General Knowledge exam
The General Knowledge portion of the Montana CDL exam is graded out of the bank of questions the Montana Motor Vehicle Division draws from each year. While the exact bank is not published, every question is sourced from the General Knowledge chapter of the Montana 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 Montana 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 General Knowledge.
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 Montana Motor Vehicle Division 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 General Knowledge 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 Montana General Knowledge practice test before scheduling the real exam.
Next steps
Missed more than four questions? Re-read the General Knowledge study guide and the matching chapter in the official Montana 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 Montana Motor Vehicle Division office.
Already comfortable with this endorsement? Drill another: MT Air Brakes · MT Combination Vehicles · MT Hazardous Materials · MT Passenger · MT School Bus · MT Tank Vehicle · MT Doubles / Triples
New to the CDL process in Montana? Read How to apply for a CDL in Montana for the document checklist and step-by-step timeline.