Restricted lanes — Colorado Permit Test
Restricted lanes on the Colorado permit test — 6 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Restricted lanes are marked by signs or pavement markings stating that the lane is restricted for special use, with a white diamond painted within the lane or a sign at the side of the road.
A diamond on the road is the one mark that means this lane is not for everyone. Missing it is how drivers end up in a bus lane.
There will be a white diamond painted on the road within the lane
Bike lanes are for the exclusive use of bicyclists and other authorized users, and drivers are prohibited from driving, idling or parking in or otherwise obstructing a bike lane.
A blocked bike lane forces a rider out into the traffic lane without warning. Idling in it for a moment does exactly the same thing.
drivers are prohibited from driving, idling or parking in or otherwise obstructing a bike lane
A bike lane extends through an intersection whether or not paint connects the bike lane on either side.
The paint stops at the intersection because cars cross there, not because the rider does. They keep their place in the lane through it.
A bike lane extends through an intersection regardless of whether paint connects the bike lane on either side
Transit lanes are a portion of street, marked by signs and markings, reserved for the preferential or exclusive use of transit vehicles such as a bus or light rail.
A bus carrying forty people gets its own lane so it is not stuck behind forty cars. Sometimes other vehicles are allowed in, and the signs say when.
Transit lanes are where a portion of the street, designated by signs and markings, is reserved for the preferential or exclusive use of transit vehicles
High Occupancy Vehicle lanes are identified by a white diamond painted on the roadway, and signs identify the types of vehicles and the number of occupants required per vehicle.
The number changes from road to road and from hour to hour, so the diamond alone cannot tell you. The sign is the part you have to read.
Signs will identify the types of vehicles and the number of occupants required per vehicle to use the lane
Reversible lanes carry traffic one way at certain times and the opposite way at others, and are separated by a barrier or marked by double-broken yellow lines.
The same strip of road belongs to one direction in the morning and the other at night. Reading the overhead signals is the only way to know which.
These lanes are separated by a barrier or marked by double-broken yellow lines
On the test
What marking shows that a lane is restricted?
A white diamond painted within the lane. A diamond on the road is the one mark that means this lane is not for everyone. Missing it is how drivers end up in a bus lane. Colorado Driver Handbook, p.10: “There will be a white diamond painted on the road within the lane”
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)