Minimum speed — New Hampshire Permit Test
Minimum speed on the New Hampshire permit test — 2 rules, each with the reason behind it and a question on it while it is fresh.
The rules
The minimum speed on an interstate highway is 45 mph, unless road and weather conditions make that speed unsafe.
Traffic moving at very different speeds is what causes collisions on a highway, so there is a floor as well as a ceiling.
The minimum speed you may drive on an interstate highway is 45 mph
Drivers who go far slower than the normal flow of traffic can cause a hazard by blocking those behind them.
A slow car makes everybody behind it change lanes or take a chance passing, which is how a careful driver causes a crash.
drivers who go far slower than the normal flow of traffic can cause a hazard.
On the test
What is the minimum speed on a New Hampshire interstate highway?
45 mph. Traffic moving at very different speeds is what causes collisions on a highway, so there is a floor as well as a ceiling. New Hampshire Driver's Manual, p.15: “The minimum speed you may drive on an interstate highway is 45 mph”
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.
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- 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.
All New Hampshire permit topics
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)