Roundabout rules — Louisiana Permit Test
Roundabout rules on the Louisiana permit test — 3 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Roundabouts reduce traffic congestion and the conflicts that often cause crashes at traditional intersections.
Cars in a circle all go one way at low speed, so the worst side and head-on crashes go away.
Roundabouts reduce traffic congestion and conflicts that are often the cause of crashes at traditional intersections.
Speeds of 15 mph or less are adequate in a roundabout.
The circle is tight, and a slow speed lets you yield, turn and spot walkers in time.
Speeds of 15 mph or less are adequate in the roundabout.
To exit a roundabout, look to your right, check your mirror and use your turn signal.
Your signal tells waiting drivers you are leaving, so they know they can safely enter.
Exit: Look to your right, check your mirror and use your turn signal.
On the test
Why are roundabouts used?
They cut congestion and conflicts. Cars in a circle all go one way at low speed, so the worst side and head-on crashes go away. Class D & E Driver's Guide, p.37: “Roundabouts reduce traffic congestion and conflicts that are often the cause of crashes at traditional intersections.”
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 Class D & E Driver's Guide, published by the Louisiana Department of Public Safety, and against the state code itself. Last checked 2026-10-04.
- src/assets/drivers-manuals/LA.pdf (Class D & E Driver's Guide, DPSMV2052 (R08/25), Louisiana Office of Motor Vehicles, retrieved 2026-09-14; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/LA.pages.txt (the plain pdftotext fixture every citation here was cut from and verified against; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/LA-exam.html (the OMV's Permits page, https://expresslane.la.gov/omv/drivers/personal-driver-s-licenses/permits/, archived 2026-10-04; the 40-question count)
- https://expresslane.la.gov/omv/resources/driver-manuals/
- https://expresslane.la.gov/omv/drivers/personal-driver-s-licenses/new-licenses/ (read 2026-10-04; "An 80% is the minimum passing score for the knowledge test.")