Passing — Colorado Permit Test
Passing on the Colorado permit test — 10 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Typically you should pass on the left, and you are only allowed to pass on the right on one way streets and on roadways with two or more lanes of travel in each direction.
Drivers look left for a passing car and rarely right. Passing on the right is allowed only where a lane is already there for it.
You are only allowed to pass on the right on one way streets and on roadways with two or more lanes of travel in each direction
You are not allowed to pass another vehicle by driving off the pavement or on the shoulder of a roadway.
The shoulder is not built for speed and is where a broken-down car or a walker will be. Passing there is a surprise to everyone.
You are not allowed to pass another vehicle by driving off of the pavement or on the shoulder of a roadway.
Before passing, judge whether you have enough time and room by observing the traffic ahead, beside and behind you.
A pass needs a gap that will still be there when you get to it. Traffic behind matters because somebody may already be passing you.
Before deciding to pass another vehicle, including bicyclists, judge whether you will have enough time and room to pass safely by observing the traffic ahead, beside and behind you
When you can see both headlights of the vehicle you passed in your rearview mirror, change one lane to get back into your previous lane.
Both headlights in the mirror means you are far enough ahead not to cut them off. Anything less and you are still beside them.
When you can see both headlights of the vehicle you passed in the rearview mirror, change one lane to get back into your previous lane
Do not count on passing several vehicles at once; to be safe, pass only one vehicle at a time.
Passing two cars takes twice the distance and twice the time in the oncoming lane. The gap that looked long enough was measured for one.
To be safe, only pass one vehicle at a time
Do not pass if you cannot safely return to the right-hand side before coming within 200 feet of an oncoming vehicle, including a bicyclist in the oncoming lane or shoulder.
Two cars closing head-on cover ground at twice their speed. Two hundred feet is the margin that keeps the return from becoming a swerve.
If you cannot safely return to the right-hand side before coming within 200 feet of an oncoming vehicle, including a bicyclist in the oncoming lane or shoulder
Do not pass if you cannot safely return to the right-hand side before a solid yellow line begins.
The solid line marks the point where the view runs out. Being still in the oncoming lane past it is being blind at closing speed.
If you cannot safely return to the right-hand side before a solid yellow line begins
Do not pass on a curve or hill where your view is obstructed, or within 100 feet of any bridge, viaduct or tunnel where your view is obstructed.
Passing needs the view to be certain, not probable. On a blind crest, whatever is coming arrives with no time for either of you.
Within 100 feet of any bridge, viaduct or tunnel when your view is obstructed
It is illegal to pass within 100 feet of any intersection or railroad crossing.
A car crossing or turning at an intersection is not looking for a vehicle in the oncoming lane. The same is true of a train.
Please note, the following behaviors are illegal when passing: ● Pass in any marked no-passing zones. ● Exceed the posted speed limit when passing. ● Pass a school bus with flashing red lights and its stop arm extended. ● Pass within 100 feet of any intersection
It is illegal to pass in a marked no-passing zone, to exceed the posted speed limit when passing, or to pass a school bus with flashing red lights and its stop arm extended.
Speeding to complete a pass is the commonest way a legal pass becomes an illegal one, and it is the one drivers think nobody minds.
Please note, the following behaviors are illegal when passing: ● Pass in any marked no-passing zones. ● Exceed the posted speed limit when passing. ● Pass a school bus with flashing red lights and its stop arm extended
On the test
Where may you pass another vehicle on the right?
On a one way street or a multi-lane road. Drivers look left for a passing car and rarely right. Passing on the right is allowed only where a lane is already there for it. Colorado Driver Handbook, p.15: “You are only allowed to pass on the right on one way streets and on roadways with two or more lanes of travel in each direction”
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)