Changing lanes — New Hampshire Permit Test
Changing lanes 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
Before changing lanes a driver should check the vehicle’s mirrors and check all blind spots by using head checks.
The mirror shows most of the lane and not the part a car is actually hiding in, which is why the head check is separate.
Check all “blind spots,” or areas around the vehicle that cannot be seen by using head checks.
A driver should identify a gap in traffic, signal, look again in the direction of the lane change, then adjust speed and steer into the lane.
The second look is the one that matters, because the traffic moved while you were signaling.
Identify a gap in traffic, signal and look again in the direction of the lane change.
On the test
What should a driver check before changing lanes?
The mirrors, and the blind spots with head checks. The mirror shows most of the lane and not the part a car is actually hiding in, which is why the head check is separate. New Hampshire Driver's Manual, p.16: “Check all “blind spots,” or areas around the vehicle that cannot be seen by using head checks.”
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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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)