Reversible lanes — Montana Permit Test
Reversible lanes on the Montana permit test — 4 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Reversible lanes, which carry traffic one way at some times and the other way at others, are usually marked by double-dashed yellow lines.
A driver who does not spot these lines may use a lane that is now carrying traffic the other way.
Double-dashed yellow lines usually mark these lanes.
Over a reversible lane, a green arrow means you may use the lane beneath it and a red X means you may not.
Driving under a red X puts you in the lane oncoming cars are using.
A green arrow means you can use the lane beneath it; a red “X” means that you may not.
Over a reversible lane, a flashing yellow X means the lane is only for turning.
A driver using a turn-only lane to go straight meets turning cars head-on.
A flashing yellow “X” means the lane is only for turning.
Over a reversible lane, a steady yellow X means the use of the lane is changing; move out of it as soon as it is safe.
Staying in the lane as it switches direction leaves you facing traffic that now owns it.
A steady yellow “X” means that the use of the lane is changing, and you should move out of it as soon as it is safe to do so.
On the test
What usually marks a reversible lane?
Double-dashed yellow lines. A driver who does not spot these lines may use a lane that is now carrying traffic the other way. Montana Driver Manual, p.35: “Double-dashed yellow lines usually mark these lanes.”
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)