Left turn signal phases — Missouri Permit Test
Left turn signal phases on the Missouri permit test — 3 rules, each with the reason behind it and a question on it while it is fresh.
The rules
A permissive left turn phase gives a circular green or a flashing yellow arrow, and the driver must wait for an adequate gap in opposing traffic.
Permissive means allowed, not protected. The gap is still yours to find.
Permissive — Vehicles are given a circular green or a flashing yellow arrow and required to wait for an adequate gap in the opposing traffic prior to making their turn.
A protected left turn phase gives a green arrow while opposing vehicles are held by a red light.
Protected means somebody else is being stopped for you. It is the only phase where the turn is not a judgment.
Protected — Vehicles may turn only when they receive a green arrow while opposing vehicles are stopped by a red light.
A protected or permissive phase gives drivers a protected green arrow at some times and a permissive phase at others, when they must choose an adequate gap.
The same signal head does both jobs at different moments, which is why watching what it is showing matters.
Protected/Permissive — Vehicles are given a protected phase (green arrow), or a permissive (circular green or flashing yellow arrow) phase, when drivers must choose an adequate gap in opposing traffic.
On the test
What does a permissive left turn phase require?
Waiting for an adequate gap in opposing traffic. Permissive means allowed, not protected. The gap is still yours to find. Missouri Driver Guide, p.44: “Permissive — Vehicles are given a circular green or a flashing yellow arrow and required to wait for an adequate gap in the opposing traffic prior to making their turn.”
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.
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- 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 Missouri Driver Guide, published by the Missouri Department of Revenue, and against the state code itself. Last checked 2026-09-16.
- src/assets/drivers-manuals/MO.pdf (Missouri Driver Guide, Revised August 2026, retrieved 2026-09-14)
- src/assets/drivers-manuals/MO.pages.txt (plain pdftotext over that PDF; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SOURCES.json (sha256, folio offset 2, folioMarker, nonLawPages and the extraction flag, each with its measured basis)