Speed limits cars — Montana Permit Test
Speed limits cars on the Montana permit test — 4 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Always obey the posted speed limit and take road conditions into account; if the road or weather is bad, you may need to drive below the limit.
The posted limit is set for a dry, clear road, so on ice it can be far too fast to stop.
If the road or weather is bad, you may need to drive below the speed limit.
Montana's speed table lists 75/80 mph for cars and light trucks on interstate highways, by day and by night alike.
A driver who guesses that night means a lower interstate limit may crawl along and be passed on all sides.
Interstate Highways 75/80 75/80 65 65
On Montana's two-lane highways, the daytime speed limit for cars and light trucks is 70 mph.
A two-lane road has oncoming cars only a few feet away, so its limit sits below the interstate's.
Two-Lane Highways 70 65 60 55
On Montana's two-lane highways, the nighttime speed limit for cars and light trucks is 65 mph.
At night your headlights show less road ahead, so you need more time to stop for what appears in them.
Two-Lane Highways 70 65 60 55
On the test
The road is icy. How should your speed compare with the posted limit?
You may need to drive below it. The posted limit is set for a dry, clear road, so on ice it can be far too fast to stop. Montana Driver Manual, p.38: “If the road or weather is bad, you may need to drive below the speed limit.”
How this works
Most practice tests hand you a bank of questions and leave the manual somewhere else. This one puts them together.
You read one law and the reason behind it, then answer a question on that law while it is still fresh. Get it right and you move on; get it wrong and you have found the gap while it is cheap to fix, not on the morning of the exam.
Learning one rule at a time, and proving it immediately, is what turns a manual you skimmed into something you actually know — and it makes studying feel like getting somewhere rather than like waiting to find out.
What it costs
- One payment, once — not a subscription. Nothing renews and there is nothing to cancel, for an exam you sit one time.
- Free to start: a 10-question test and the first section of cards. No sign-up and no account.
- Paying opens the rest of the cards, unlimited full-length practice tests, and retests built from exactly the questions you got wrong.
- Every level up to Prepared — 3 tests passed in a row.
- Do the work, fail the real exam, and we refund you.
Where these come from
Every rule here is checked against Montana Driver Manual, published by the Montana Department of Justice, and against the state code itself. Last checked 2026-10-04.
- src/assets/drivers-manuals/MT.pdf (Montana Driver Manual, Revised April 2024, Montana Department of Justice, Motor Vehicle Division, retrieved 2026-09-14 and re-checked 2026-10-04; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/MT.pages.txt (scripts/mt-text.sh: pdftotext -layout except printed pp.24-26, which are plain; the fixture every citation here was cut from and verified against; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/MT-exam.html (Administrative Rules of Montana 23.3.121, Road Signs and Road Rules, as reproduced by the Legal Information Institute, read 2026-10-04; states the seven-miss pass mark; sha256 pinned under examSource)
- https://mvdmt.gov/forms-driver-license/ (read 2026-10-04; links the manual)