Free Montana DMV CDL — General Knowledge Practice Test 2026
The Montana CDL — General Knowledge knowledge test has ~50 questions, and you need ~40 correct (80%) to pass. Practice free with questions written from the official Montana driver handbook — every one has a clear explanation, and you can retake as often as you like with no sign-up.
Content reviewed against official driver handbooks · August 12, 2026
What's on the Montana written test
The Montana CDL — General Knowledge knowledge test has ~50 questions; you need ~40 correct (80%) to pass.
Based on the official Montana exam format — always confirm current details with your state DMV.
Practice by topic
Focus on one area at a time — each topic has its own set of Montana practice questions.
Learn the shapes, colors, and meanings of regulatory, warning, and guide signs — from stop and yield to construction and school-zone signs.
Speed limits, turning and signaling rules, headlight and seat-belt requirements, and the everyday laws every driver must follow.
How to read traffic signals, lane lines, and pavement markings — including yellow and white lines, arrows, and flashing lights.
Who goes first at intersections, four-way stops, roundabouts, and crosswalks, and how to yield to pedestrians and emergency vehicles.
Following distance, scanning, blind spots, using your lights, and the habits that prevent crashes and keep you in control.
Driving safely around motorcycles, bicycles, large trucks, pedestrians, and school buses — and knowing who has the right of way.
Blood alcohol limits, zero-tolerance and implied-consent laws, and how alcohol and drugs — legal or not — affect your driving.
Legal and illegal parking, colored curbs, distances from hydrants and crossings, and how to park safely on hills.
Choosing a safe speed, keeping a space cushion, adjusting for weather and traffic, and understanding stopping distance.
What to do when things go wrong — brake failure, tire blowouts, skids, and stalling on railroad tracks.
The point system, license suspension, provisional-license rules, insurance requirements, and other licensing basics.
How to pass the first time
- Read the official Montana driver handbook at least once before test day.
- Practice by topic to find your weak spots, then fix them.
- Take full-length practice tests until you pass comfortably every time.
- Read every explanation — understanding beats memorizing.
Montana CDL — General Knowledge test — frequently asked questions
How many questions are on the Montana CDL — General Knowledge test?
The Montana CDL — General Knowledge knowledge test has ~50 questions, and you need ~40 correct (80%) to pass. Our practice tests mirror that format.
How many questions can I miss on the Montana CDL — General Knowledge test?
You can miss up to ~10 of the ~50 questions and still pass — you need ~40 correct, which is 80%.
Can I retake the practice test?
Yes — practice as often as you like, completely free. The questions and answer choices are shuffled each time.
Can I take the Montana practice test in Spanish?
Yes. Every question here is available in English and Spanish — switch languages anytime. Many states also offer the real knowledge test in languages other than English; confirm what Montana offers with your DMV.
Can I practice on my phone?
Yes. The practice tests work in any mobile or desktop browser — no app or sign-up needed — so you can study anywhere.
Are these the real DMV test questions?
No. Our questions are original, written from the current official Montana driver handbook to match the real test's topics and style. We are not affiliated with any DMV or government agency.
What's the best way to study?
Read the Montana driver handbook, practice by topic to target weak areas, and finish with full-length tests until you consistently pass.
Other Montana practice tests
Take the CDL — General Knowledge test in another state
Every Montana question is written from the official Montana driver handbook and checked against its current edition. DMV Test Free is a free, independent study resource — not affiliated with any DMV or government agency. About DMV Test Free
Montana CDL — General Knowledge questions with answers
20 sample questions from the Montana CDL — General Knowledge question bank — each with the correct answer, a short explanation, and the section of the official handbook it comes from.
Show all 20 questions with answers
1. Which sights does the manual call hazard clues that someone is working on a disabled vehicle?
Correct answer: Jacked-up wheels or raised hoods
Someone fixing an engine or swapping a tire often ignores the danger from passing traffic. The manual lists jacked-up wheels and raised hoods as clues.
Source: Montana Commercial Driver License Manual — Section 2.8.3, Drivers Who Are Hazards
2. At some public railroad crossings, trains do not sound their horns. How does the manual say these crossings should be identified?
Correct answer: By signs
The manual notes that trains may not, or may be prohibited from, sounding horns at some crossings, and that public crossings of that kind should be marked with signs.
Source: Montana Commercial Driver License Manual — Section 2.15.3, Driving Procedures
3. If you have to keep driving in fog, what does the manual say about stopping along the side of the road?
Correct answer: Don't, unless it is absolutely necessary
The manual would rather drivers wait at a truck stop or rest area for visibility to improve. Among its tips for those who must drive is not to stop along the roadside unless absolutely necessary.
Source: Montana Commercial Driver License Manual — Section 2.12, Driving in Fog
4. While double clutching you stay in neutral too long and cannot get into the next gear. What does the manual say to do?
Correct answer: Go back to neutral, let the clutch out, bring engine rpm up to match road speed, and make another attempt
The manual warns against forcing the shift. Instead you return to neutral, let the clutch out, bring engine speed up to match road speed and make another attempt.
Source: Montana Commercial Driver License Manual — Section 2.3.1, Manual Transmissions
5. On the CDL road test, what does the manual say about changing lanes while you are driving through an intersection?
Correct answer: It is not allowed while you are going through the intersection
While driving through an intersection on the test you check traffic in all directions, yield to pedestrians and traffic already in it, keep both hands on the wheel, and stay in your lane.
Source: Montana Commercial Driver License Manual — Section 13.1.2, Intersections
6. Montana's restricted seasonal CDL for employees in farm-related service industries is valid only during which part of the calendar year?
Correct answer: March 15 through September 10
The manual says a seasonal CDL is good only between March 15 and September 10 each calendar year, and only within a 150-mile radius of the place of business or farm.
Source: Montana Commercial Driver License Manual — Restricted Seasonal CDL
7. On packed snow, by how much does the manual say to reduce your speed?
Correct answer: By a half, or more
The manual's guidance is to cut speed by about one-third on a wet road and by half or more on packed snow. On ice, creep along and quit driving once you can do so safely.
Source: Montana Commercial Driver License Manual — Section 2.6.2, Matching Speed to the Road Surface
8. What does the manual say alcohol can do when it is combined with other drugs?
Correct answer: Make what the other drugs do much worse
The manual warns that alcohol can greatly worsen the effects of other drugs and concludes that the safest rule is never to mix drugs with driving.
Source: Montana Commercial Driver License Manual — Section 2.22.2, Other Drugs
9. To prove full legal name and date of birth for a Montana commercial driver license, which combination of documents does the manual accept?
Correct answer: Two primary documents, or a primary document paired with a secondary one
Montana asks for two documents shown to an examiner at a driver license station: either two from the primary list, or one primary and one secondary.
Source: Montana Commercial Driver License Manual — Proof of Authorized Presence, Identity, and Residence
10. Right after you start the engine in Step 3 of the seven-step inspection, which warning lights does the manual say should go out right away?
Correct answer: The oil, coolant, charging-circuit and ABS lights
When checking warning lights and buzzers, the oil, coolant, charging circuit and antilock brake system lights should all go out immediately.
Source: Montana Commercial Driver License Manual — Section 2.1.5, Seven-step Inspection Method
11. The manual says to brake with ABS as you always have, with one exception. What is it?
Correct answer: If ABS is working on every axle of your straight truck or combination, you can apply the brakes fully in an emergency stop
Normally you use only the braking force needed to stop safely and stay in control. The single exception is an emergency stop in a vehicle whose ABS is working on every axle.
Source: Montana Commercial Driver License Manual — Section 2.18.6, Braking with ABS
12. A driver's head and body movements can hint at a coming turn even when no signal is on. In which road users does the manual say these clues are most easily seen?
Correct answer: Motorcyclists and bicyclists
Drivers look where they intend to turn, and over-the-shoulder checks may mean a lane change. The manual says these clues are easiest to spot in motorcyclists and bicyclists.
Source: Montana Commercial Driver License Manual — Section 2.8.3, Drivers Who Are Hazards
13. A truck carries hazardous materials in an amount that does not require placards. May a driver without the hazardous materials endorsement drive it?
Correct answer: Yes. The endorsement is needed only when the vehicle requires placards
The manual says not every vehicle hauling hazardous materials needs placards. You may drive one that does not, but a vehicle that requires placards may be driven only with the hazardous materials endorsement.
Source: Montana Commercial Driver License Manual — Section 2.23.3, Lists of Regulated Products
14. You are stopped just beyond a hill that keeps other drivers from seeing your vehicle. What does the manual say to do with the rear-most triangle?
Correct answer: Move it farther back down the road so that it gives warning
When a hill, curve or other obstruction blocks the line of sight, the rear-most triangle is moved back along the road to a point where approaching drivers get warning.
Source: Montana Commercial Driver License Manual — Section 2.5.2, Communicating Your Presence
15. The manual warns that being blinded by glare for as little as two seconds is dangerous. How far does a vehicle going 55 mph travel in that time?
Correct answer: More than half the length of a football field
Bright light can blind a driver briefly and recovery takes several seconds. In two seconds a vehicle at 55 mph covers more than half a football field.
Source: Montana Commercial Driver License Manual — Section 2.11.2, Driver Factors
16. On the road test you stop behind another vehicle before making a turn. How much of a gap does the manual call safe?
Correct answer: Enough that you can see the rear tires of the vehicle ahead
When stopping behind another vehicle, the manual says to stop where the rear tires of that vehicle are visible, which it calls a safe gap.
Source: Montana Commercial Driver License Manual — Section 13.1.1, Turns
17. A 45-year-old Montana driver with no motorcycle endorsement compares the two CDL types on the manual's fee table. How do they compare?
Correct answer: Interstate $41.72 and intrastate $35.54, each valid four years
For customers aged 21 to 71 the table lists $41.72 for an interstate CDL and $35.54 for an intrastate CDL. Both rows show a four-year license. The manual notes that fees can change.
Source: Montana Commercial Driver License Manual — Fees
18. For a driver who is alert, what does the manual give as the average perception time?
Correct answer: 1 3/4 seconds
The manual puts average perception time for an alert driver at 1 3/4 seconds, which accounts for 142 feet of travel at 55 mph.
Source: Montana Commercial Driver License Manual — Section 2.6.1, Stopping Distance
19. To stay alert on a long trip, how often does the manual suggest taking periodic breaks?
Correct answer: About every 100 miles or 2 hours
Among the tips for maintaining alertness while driving is to take periodic breaks roughly every 100 miles or 2 hours on long trips.
Source: Montana Commercial Driver License Manual — Section 2.11.2, Driver Factors
20. A 19-year-old Montana resident meets every other qualification for a commercial license. Which license does the manual's age rule allow?
Correct answer: An intrastate (Montana-only) license; the interstate license requires age 21
Montana requires applicants for an Interstate license to be at least 21. An Intrastate license is open to qualified applicants who are at least 18.
Source: Montana Commercial Driver License Manual — Minimum Driver Ages / Certification Age