Roundabouts — California Permit Test
Roundabouts on the California permit test — 7 rules, each with the reason behind it and a question on it while it is fresh.
The rules
In a roundabout, traffic travels in one direction around a central island, and you yield to all traffic already in it.
Traffic inside the circle has nowhere to stop, so the waiting is done before you enter.
Yield to all traffic already in the roundabout.
Slow down as you approach a roundabout and enter heading to the right when there is a big enough gap in traffic to merge safely.
Arriving slowly is what gives you time to read the gap instead of guessing at it.
Enter heading to the right when there is a big enough gap in traffic to merge safely.
Travel in a counterclockwise direction inside a roundabout, and do not stop or pass.
Everything in the circle is moving the same way at the same speed, and a stop breaks that.
Travel in a counterclockwise direction. Do not stop or pass.
Signal when you change lanes or exit a roundabout, and watch for signs and lane markings that guide you.
The driver waiting to enter is reading your signal to decide whether the gap is real.
Watch for signs and lane markings that guide you.
If you miss your exit in a roundabout, continue around until you return to it.
Crossing back for a missed exit cuts across traffic that has nowhere to go.
If you miss your exit, continue around until you return to your exit.
In a multilane roundabout, choose your entry or exit lane based on your destination, and to turn right choose the right lane and exit in the right lane.
Picking the lane before you enter saves you crossing one inside the circle.
If the roundabout has multiple lanes, choose your entry or exit lane based on your destination.
To go straight through a multilane roundabout you may choose either lane, and you exit in the lane you entered.
Changing lanes inside the circle is a lane change into a blind spot on a curve.
Go straight (red car): Choose either lane. Exit in the lane you entered.
On the test
Who do you yield to at a roundabout?
All traffic already in the roundabout. Traffic inside the circle has nowhere to stop, so the waiting is done before you enter. California Driver’s Handbook, p.40: “Yield to all traffic already in the roundabout.”
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 California Driver’s Handbook, published by the California Department of Motor Vehicles, and against the state code itself. Last checked 2026-09-21.
- src/assets/drivers-manuals/CA.pdf (California Driver’s Handbook, DL 600 ENGLISH (REV. 6/2025), retrieved 2026-09-14; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/CA.pages.txt (the pdftotext -layout fixture every citation here was cut against and verified against; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SOURCES.json, CA entry — the folio offset of 6 and its basis, the three non-law pages, the two sign gallery pages, and the record of why California’s exam shape is this app’s own
- docs/plans/chosen-exam-shapes.md section 5 — the decision that a state publishing neither exam figure ships 40/32 with both disclosed
- docs/plans/how-to-build-laws.md — the rule that the handbook is the syllabus and nothing enters this file without a page in it