Sign colors — New Hampshire Permit Test
Sign colors on the New Hampshire permit test — 9 rules, each with the reason behind it and a question on it while it is fresh.
The rules
On a traffic sign the color red means prohibition, either stop or do not do something.
One color carries the whole idea of a thing you may not do, which is why it is used so sparingly.
Red Prohibition (stop or do not do something)
On a traffic sign the color green means direction or guidance.
Green signs are the ones a driver reads to find out where they are going rather than what they must do.
Green Direction or guidance
On a traffic sign the color blue means driver services.
Fuel, food and a hospital are not rules, so they get a color that does not compete with the ones that are.
Blue Driver services
On a traffic sign the color yellow means a general warning.
Yellow tells a driver to expect something without saying it is forbidden, which is a different message from red.
Yellow General warning
On a traffic sign the color white means a law or rule of the road.
White signs carry the rules a driver can be ticketed for, which is why there are so many of them.
White Law or rule of the road
On a traffic sign the color orange means a road repair work warning.
Orange is reserved for work zones so a driver knows at a glance that the road ahead is not as it usually is.
Orange Road repair work warning
On a traffic sign the color brown means tourist and recreation guidance.
Brown separates the park from the highway exit, so a driver looking for one is not distracted by the other.
Brown Tourist and recreation guidance
On a traffic sign the color pink means incident management.
Pink is rare enough that a driver who sees it knows something unusual has happened on the road ahead.
Pink Incident management
On a traffic sign the color purple means E-ZPass.
The color marks the lanes a driver may only use with a transponder, which is a decision made at speed.
Purple EZPass
On the test
What does the color red mean on a traffic sign?
Prohibition. One color carries the whole idea of a thing you may not do, which is why it is used so sparingly. New Hampshire Driver's Manual, p.21: “Red Prohibition (stop or do not do something)”
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
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Where these come from
Every rule here is checked against New Hampshire Driver's Manual, published by the New Hampshire Division of Motor Vehicles, and against the state code itself. Last checked 2026-09-16.
- src/assets/drivers-manuals/NH.pdf (New Hampshire Driver's Manual, Rev. 11/25, New Hampshire Division of Motor Vehicles, retrieved 2026-09-14)
- src/assets/drivers-manuals/NH.pages.txt (plain pdftotext over that PDF; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SOURCES.json (sha256, folio offset 6, folioMarker, nonLawPages, signGalleryPages and the extraction flag, each with its basis)