Maine Bicycle Laws

Required under age

Required under age 16

Applies to passengers

Yes

Standard

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

Penalty

29-A M.R.S. § 2323 requires every operator and passenger under 16 to wear a properly fitted helmet that meets ASTM, Snell, or ANSI standards. A first violation results in a warning; subsequent violations 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

Maine has no statewide statute permitting or prohibiting sidewalk cycling. The state Bicycle Coalition guidance and Maine DOT both point readers to municipal codes. Portland prohibits sidewalk riding by anyone over 10 years old in the downtown overlay district; Bangor and Lewiston 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

Maine's OUI statute (29-A M.R.S. § 2411) applies only to operators of a 'motor vehicle' on a public way. Bicycles are not motor vehicles under 29-A § 101, so a cyclist cannot be charged with OUI. Public-drinking and disorderly-conduct laws may still apply.

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 200 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 200 feet when directly in front of lawful lower-beam headlamps. A red lamp on the rear visible from 200 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 when impeding the normal and reasonable movement of traffic; riders must move to single file when being overtaken on roadways too narrow to share.

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 Maine Interstate highways (I-95, I-295, I-195, I-395) under MaineDOT controlled-access regulations. The Maine portion of US-1 and other state routes remain open to bicycles.

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