Hills and curves — Colorado Permit Test
Hills and curves on the Colorado permit test — 4 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Hills and curves can hide obstructions in the road even on familiar roads, so be prepared to stop when approaching a curve or hill that obscures your view.
A familiar road is the one you stop looking at. What is round the bend today was not there yesterday.
Hills and curves can hide obstructions in the road, even on familiar roads
If you cannot see over the top of a hill, slow down to an appropriate speed until you crest it and regain sight of the roadway.
Over a crest you are driving into a road you cannot see. Slowing means you can stop inside the distance that appears.
If you cannot see over the top of a hill, slow down to an appropriate speed until you crest the hill and regain sight of the roadway
Always slow down before entering a curve, because going through it too fast means the tires cannot grip and the vehicle will skid.
Braking in the curve is what breaks the grip. Do the slowing first, and the tires have only one job left to do.
Always slow down before entering a curve
Begin your acceleration only after reaching the middle of a curve.
Until the middle, the tires are still doing all the work turning. Adding power before that is what makes the back of the car step out.
Begin your acceleration only after reaching the middle of the curve
On the test
What should you be ready for approaching a blind hill or curve?
To stop for something hidden beyond it. A familiar road is the one you stop looking at. What is round the bend today was not there yesterday. Colorado Driver Handbook, p.16: “Hills and curves can hide obstructions in the road, even on familiar roads”
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 Colorado Driver Handbook, published by the Colorado Division of Motor Vehicles, and against the state code itself. Last checked 2026-09-16.
- src/assets/drivers-manuals/CO.pdf (Colorado Driver Handbook, DR 2337 (12/05/24), Colorado Division of Motor Vehicles, retrieved 2026-09-14 from dmv.colorado.gov/publications)
- src/assets/drivers-manuals/CO.pages.txt (plain pdftotext over that PDF; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SOURCES.json (sha256, folio offset 3, folioMarker, the extraction flag and the four trap measurements, each with its measured basis)
- 1 CCR 204-30, Rule 8 (402)(B)(4), the Colorado Department of Revenue rule stating the 80% pass mark for the DR 2252WE Driver's License Written Examination, read 2026-09-16 at law.cornell.edu/regulations/colorado/1-CCR-204-30-8
- docs/plans/colorado-exam-shape.md (what was searched and came up empty, and the 30-question practice quiz that must not become the exam's count)
- docs/work/colorado-corpus/plan.md (why the 40-question count was chosen, and the two figures it refused)