Route number signs — New Hampshire Permit Test
Route number signs on the New Hampshire permit test — 4 rules, each with the reason behind it and a question on it while it is fresh.
The rules
The shape and color of route number signs indicate the type of roadway: interstate, US routes, state routes, and local roads.
A driver reading a map in their head needs to know which kind of road a number belongs to before the number helps.
The shape and color of route number signs indicate the type of roadway: interstate, US routes, state routes, and city, county, or local roads.
Even-numbered interstate routes are west and east routes, and odd numbers are north and south routes.
The number tells a driver which way the road runs before they have seen a single sign for a destination.
Even numbers are west/east routes and odd numbers are north/south routes.
A three-numbered route with an odd first number is a route into a city.
It saves a driver from following a spur into a downtown they were trying to drive past.
Three numbered routes with an odd first number are routes into a city.
A three-numbered route with an even first number goes through or around a city.
It is the bypass, and knowing that from the number alone is how a driver avoids city traffic.
Three numbered routes with an even first number go through or around a city.
On the test
What do the shape and color of a route number sign indicate?
The type of roadway the number belongs to. A driver reading a map in their head needs to know which kind of road a number belongs to before the number helps. New Hampshire Driver's Manual, p.22: “The shape and color of route number signs indicate the type of roadway: interstate, US routes, state routes, and city, county, or local 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
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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)