State has a Far Right as Practicable Requirement

New Hampshire requires a bicyclist moving slower than traffic to keep to the right, except when passing, turning left, going straight where only a right turn lane is available, or avoiding a hazard.

Allows Two Abreast Riding

New Hampshire allows bicyclists to ride more than one abreast as long as they don't obstruct the normal flow of traffic and stay within a single marked lane.

Single File is Required

New Hampshire does not require bicyclists to ride single file; riding abreast is allowed as long as traffic isn't obstructed and the group stays in one lane.

Has a Safe Passing Law

New Hampshire requires a driver passing a bicyclist to leave a reasonable and prudent distance, presumed to be at least three feet at speeds of 30 mph or below, plus one additional foot for every 10 mph faster than that.

Helmets are required on the road

New Hampshire requires a bicyclist under age 16 to wear commissioner-approved protective headgear on any public way; there is no adult helmet requirement.

If Bike Lanes are present, they are required ( except when unsafe )

No New Hampshire statute requires a bicyclist to use a bike lane or path when one is available. RSA 265:144, XI is the bicyclist right-side-of-the-way rule; neither it nor any other section of the Special Rules for Bicycles and Mopeds subdivision (RSA 265:143 to 265:144-a) requires a bicyclist to use a bicycle lane or path.

Riders may use the sidewalks

New Hampshire law does not squarely resolve whether a bicycle counts as a "vehicle" for the general sidewalk-driving ban in RSA 265:26-a: the broad Title XXI definition of "vehicle" doesn't exclude bicycles from Chapter 265 (only from Chapter 264), yet the bicycle-specific statute describes a cyclist as being given the rights of the driver of "any other vehicle," implying a bicycle isn't one. In practice, sidewalk cycling is generally tolerated and regulated locally, but there is no clean statewide "yes."

Does the Impeding Statute Apply to Bikes

New Hampshire's impeding-traffic statute is written broadly enough ("vehicle," not "motor vehicle") that it could in principle apply to a slow-moving bicycle, but it only has teeth where a minimum speed limit has actually been posted — which by the statute's own terms means the interstate system (45 mph, where bicycles are generally excluded) or a specific road section the transportation commissioner has separately declared. Outside those posted-minimum locations, there's no minimum speed to violate.

Whether cyclists may treat stop signs as yield signs (the "Idaho stop").

New Hampshire has no "Idaho stop" law. A bicyclist must come to a full stop at a posted stop sign like any other driver.

Restrictions exist on e-bikes and usage

New Hampshire treats an e-bike as a bicycle, but applies different rules by class: Class 1 and 2 e-bikes can generally use bike paths (subject to local override), a Class 3 e-bike is more restricted on paths, a Class 3 operator must be at least 16, and a Class 3 passenger under 18 must wear a helmet. Class 1 and 2 riders and adult Class 3 riders have no helmet requirement.

Allows the concept of Contributory Negligence that allows any contributory fault resuls in 'no fault'

New Hampshire uses modified comparative fault: an injured cyclist can recover damages, reduced by their own percentage of fault, as long as that fault does not exceed the combined fault of the defendant(s). If the cyclist's fault is greater than the defendants' combined fault, recovery is barred entirely.