Mountain roads — California Permit Test
Mountain roads on the California permit test — 2 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Where two vehicles meet on a steep narrow road and neither can pass, the vehicle facing uphill has the right-of-way.
The car pointing downhill can reverse under control; the one pointing uphill cannot.
If two vehicles meet on a steep narrow road and neither vehicle can pass, the vehicle facing uphill has the right-of-way.
The vehicle facing downhill has more control when backing up the hill, so it should back up until the vehicle going uphill can pass.
Reversing downhill is a car rolling with the slope, which is the hard version of the same job.
The vehicle facing downhill has more control when backing up the hill.
On the test
Which vehicle has the right-of-way on a steep narrow road?
The one facing uphill. The car pointing downhill can reverse under control; the one pointing uphill cannot. California Driver’s Handbook, p.42: “If two vehicles meet on a steep narrow road and neither vehicle can pass, the vehicle facing uphill has the right-of-way.”
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