New Hampshire Bicycle Laws

Required under age

Required under age 16

Applies to passengers

Yes

Standard

ANSI Z90.4, Snell, or ASTM (a CPSC-certified helmet meets these specifications)

Penalty

RSA 265:144 requires every operator and passenger under 16 to wear a properly fitted helmet that meets ANSI, Snell, or ASTM standards on any public way, public bicycle path, or other public right-of-way. The first offense is a warning; subsequent offenses carry a fine of up to $25, which a court may waive on proof of helmet purchase.

Statute

¹

Confirm equipment fit with the helmet size calculator before relying on an age rule alone.

Statewide rule

Defers to local rules

Notes

New Hampshire has no statewide statute permitting or prohibiting sidewalk cycling. RSA 265:144 governs equipment and rider behaviour but is silent on sidewalks. Manchester restricts sidewalk riding in the central business district; Portsmouth bans it in the historic downtown; smaller towns generally permit sidewalk riding except where signed.

Statute

—

A bell does not replace yielding or signaling, but it can warn other path users; compare bike bells and horns.

Applies to bicycles

No

Separate cycling DUI statute

No

BAC limit

—

Penalty

New Hampshire's DWI statute (RSA 265-A:2) applies to anyone who 'drives or attempts to drive a vehicle upon any way' while under the influence. In practice the New Hampshire courts read the statute as reaching motor vehicles and OHRVs, and cyclists are not charged with DWI; the parallel boating-while-intoxicated and OHRV-while-intoxicated statutes are codified separately. Public-intoxication and disorderly-conduct charges remain available.

Statute

¹

If alcohol or drugs may impair the rider, do not ride; arrange another way home and secure the parked bike with a lock suited to the theft risk.

— Not yet researched.

Front light required

Yes

Front spec

Lamp on the front emitting a white light visible from a distance of at least 300 feet to the front, required from one-half hour after sunset to one-half hour before sunrise.

Rear requirement

Rear reflector or light

Rear spec

Red reflector on the rear visible from at least 300 feet to the rear when directly in front of lawful lower-beam headlamps. A red rear lamp visible from 300 feet may be used in addition to the reflector.

Side reflectors

No

Pedal reflectors

No

When required

Darkness

Statute

¹

For equipment that matches the visibility requirement, compare bike lights by beam and runtime.

— Not yet researched.

Two abreast allowed

Yes

Conditions

Two abreast permitted on the roadway except on parts of roadways set aside for the exclusive use of bicycles, where the cap does not apply. Riders shall not impede the normal and reasonable movement of traffic.

Statute

¹

For low-light road and group visibility, compare bike lights for commuting and unlit roads.

Rule

—

Statute

—

A mirror can supplement direct observation but cannot replace shoulder checks or hearing traffic; compare bike mirrors by mount type.

— Not yet researched.

Bicycle registration required

No

Operator license required

No

For theft prevention when the bike is parked, compare bike locks for different risk levels.

Interstates

Prohibited

Notes

Bicycles are prohibited on New Hampshire Interstate highways (I-89, I-93, I-95) and on the toll-road portions of the Everett, Spaulding, and Central Turnpikes under New Hampshire Department of Transportation (NHDOT) controlled-access regulations. Conventional US and state routes (US-3, US-4, NH-101) remain open to bicycles.

For low-light road and group visibility, compare bike lights for commuting and unlit roads.