Maine E-Bike Laws 2026: Acadia Class 1 Only

The 30-second answer

E-bikes are legal across Maine under the federal Class 1/2/3 framework adopted by LD 1222 (129th Legislature), enacted as Public Law 2019, Chapter 349, signed by Governor Janet Mills on 18 June 2019, effective 19 September 2019. The definition is at 29-A MRSA §101(22-B); the operating rules — path access, age, helmet, equipment, license/registration exemption — are at 29-A MRSA §2063, sub-§14. Motor cap is less than 750 watts.

Two things make Maine unusual: (1) no Class 3-specific helmet rule — Maine departs from the PeopleForBikes model bill that most other three-tier states adopted (CA, CT, LA, AR all require all-ages Class 3 helmets; Maine does not). (2) the under-16 helmet rule under §2063(14)(H)(3) applies to ALL classes — not just Class 3. So the practical helmet rule is "under 16 wears a helmet on any e-bike; 16+ may go bareheaded on any class."

Path access is the two-tier opt-in/opt-out that catches most riders out:

• Class 1 and Class 2 on paved bike paths: permitted by default; municipality MAY prohibit (opt-OUT).
• Class 3 on paved bike paths: PROHIBITED unless the path is within a highway/roadway, OR the path is specifically authorized for Class 3.
• Paths surfaced with "gravel, stones or wooden bridging" (the statute's exact triple — singletrack and rustic trails): ALL classes PROHIBITED unless the local authority explicitly opts in (opt-IN).

No driver license, no DMV registration, no insurance under §2063(14)(A). Class 3 operator minimum age is 16; under-16 may not operate a Class 2 or Class 3.

Quick reference

Two practical reads. First, if you're heading to Maine for an Acadia cycling vacation, buy or rent a Class 1 pedal-assist — the marquee 45-mile carriage road system is Class-1-only, and Bar Harbor outfitters cannot legally rent Class 2 or 3 for carriage-road use. Second, Maine's natural-surface opt-IN rule is unusual — most states default soft-surface paths to permissive; Maine requires explicit local authorization. Verify at the trailhead.

The three-class system in Maine

Maine defines an "electric bicycle" at 29-A MRSA §101(22-B):

"Electric bicycle" means a 2-wheel or 3-wheel bicycle with fully operable pedals and an electric motor of less than 750 watts that is a Class 1 electric bicycle, a Class 2 electric bicycle or a Class 3 electric bicycle.

The three classes are defined verbatim in the same subsection:

• Class 1 — "an electric bicycle equipped with a motor that provides assistance only when the rider is pedaling and that ceases to provide assistance when the bicycle reaches a speed of 20 miles per hour."
• Class 2 — "an electric bicycle equipped with a motor that is capable of being used exclusively to propel the bicycle but is not capable of propelling the bicycle at a speed of 20 miles per hour." (Note: Maine's Class 2 phrasing is slightly different from the federal model — it caps the bike's motor-only speed at 20 mph rather than just having the motor cut at 20 mph.)
• Class 3 — "an electric bicycle equipped with a motor that provides assistance only when the rider is pedaling and that ceases to provide assistance when the bicycle reaches a speed of 28 miles per hour."

The framework was enacted by LD 1222 / HP 882 during the 129th Legislature's 1st Regular Session and signed as Public Law 2019, Chapter 349 by Gov. Janet Mills on 17 June 2019 (the Bicycle Coalition of Maine's announcement is dated 18 June). The law took effect on the standard 90-day default after sine die adjournment of the 129th 1st Reg. Session on 20 June 2019 — strict statutory math gives 18 September 2019; many secondary sources cite 19 September.

Why the year matters

Many retailer SEO blogs say Maine's e-bike law was enacted in 2020. That's wrong — the bill was signed in June 2019 and took effect that September. Use 2019 when citing the enacting year.

Where you can ride

Roads + bike lanes

Same rights and duties as a regular bicycle. All three classes may use roads and bike lanes.

Multi-use paths — Maine's two-tier rule

29-A MRSA §2063, sub-§14, ¶F governs operating locations and is more nuanced than the simple "Class 3 banned" framing many states use:

• Class 1 and Class 2 on paved bike paths: permitted by default. "A Class 1 or Class 2 electric bicycle may be operated in any place where bicycles are permitted to travel, including, but not limited to, bicycle paths," but a municipality, local authority, or public-agency governing body may prohibit Class 1 or 2 on a specific path. This is opt-OUT: permitted unless prohibited.
• Class 3 on paved bike paths: prohibited unless the path is within a highway/roadway OR specifically authorized by the governing body. This is the typical three-tier rule.
• Paths surfaced with "gravel, stones or wooden bridging" (the statute's exact triple — i.e., singletrack and rustic trails): ALL classes prohibited unless the local authority explicitly opts in. This is opt-IN: prohibited unless authorized. This rule is significant for Maine land trusts and Bureau of Parks & Lands trails — many of which haven't formally opted in.

Sidewalks

No statewide rule — local ordinance controls. Portland sidewalk rules: verify locally; Bangor City Forest has no published e-bike policy in its parks code (Bangor Code Ch. 231 is silent — defaults to state §2063). When in doubt, call the local parks department before riding.

Acadia National Park — the marquee Maine cycling destination

Acadia National Park is THE Maine cycling destination. With ~4 million visitors per year and the historic 45-mile Rockefeller carriage-road system, it's the most-asked Maine cycling question.

The current rules (per the Acadia Superintendent's Compendium dated 16 January 2026 and NPS Class 1 announcement):

• Carriage roads (45 mi historic system): Class 1 ONLY — pedal-assist only, cuts at 20 mph. Class 2 and Class 3 are prohibited. Speed limit on the carriage roads is 20 mph for ALL users (reduced from 25 mph in 2019).
• Park Loop Road / motor roads (27 mi loop + connectors): All three classes permitted — "Class 2 and Class 3 e-bikes are only permitted on motor roads within Acadia National Park" (Compendium verbatim).
• Schoodic bike paths: Class 1 ONLY — "Schoodic bike paths are closed to Class 2 and Class 3 e-bikes, and to all motorized vehicles."
• Isle au Haut (Western Head Road): Class 1 ONLY — where traditional bicycles are allowed.
• Hiking trails (across all park units): bicycles and e-bikes (any class) prohibited statewide on hiking trails.

Authority: NPS Policy Memorandum 19-01 (implementing DOI Secretary's Order 3376) plus the Acadia Superintendent's Compendium. Peak-season (July-August) enforcement is real — NPS Law Enforcement does issue citations for Class 2 or Class 3 on carriage roads, and the Compendium gives explicit authority for those citations.

Bar Harbor rental scene: outfitters (Acadia Bike, Bar Harbor Bicycle Shop, etc.) must rent Class 1 pedal-assist only for any customer who plans to ride the carriage roads. Throttle (Class 2) rentals are restricted to Park Loop Road / motor roads. If you're booking an e-bike rental in Bar Harbor and the shop tells you you can take a Class 2 throttle bike on the carriage roads, that's not legal.

Other major trails

Down East Sunrise Trail (~87 mi)

The Down East Sunrise Trail runs ~87 miles of crushed-stone rail-trail from Ellsworth to Calais — Maine's longest contiguous rail-trail. The official rules page lists ATV and snowmobile registration requirements (the trail is multi-use motorized), but does not explicitly address e-bikes. Practical read: e-bikes are permissive on this trail by virtue of its multi-use motorized character. To be certain, contact the Maine DOT trail manager (the official contact is on the trail website).

Eastern Trail

The Eastern Trail runs from Kittery to South Portland along the southern Maine coast. The Eastern Trail Management District's e-bike policy is explicit:

• Class 1 and Class 2 e-bikes: ✅ permitted.
• Class 3 e-bikes: ❌ prohibited.

Portland Trails (Eastern Promenade Trail, Back Cove Trail, and the broader network)

Per the Portland Trails FAQ: "Portland Trails is permitting Class I and II e-bikes on our trails... Class III e-bikes are not permitted on any Portland Trails trail." Class 1 + Class 2 only across the Portland Trails network.

Carrabassett Valley MTB

The Carrabassett Region NEMBA trail network around Sugarloaf has a granular rule: Class 1 only on Sugarloaf-side trails (south of Rt 27), per the 23 May 2022 Select Board vote that originally started as a trial period through 1 November 2022. Confirm with Carrabassett Region NEMBA before riding whether the trial was extended or made permanent. E-bikes are NOT allowed on the CVTrails network north of Rt 27 (Narrow Gauge, Campbell Field, etc.) — those segments cross private easements that limit use to non-motorized.

Baxter State Park (Mt Katahdin)

Baxter State Park is the most restrictive land in Maine for cycling. BSP Rules Ch. 1 prohibits "motorcycles, motorized trail bikes, and all-terrain vehicles" verbatim — the rule does not name "e-bikes" explicitly, but the Park interprets the motorized-vehicle clause to include all e-bikes, of any class. If you are planning a trip and the class question matters, call the Reservation Office at 207-723-5140 to confirm before riding. Bicycles (non-electric) are restricted to maintained roads + the Dwelley Pond Trail. The Appalachian Trail through BSP follows the AT-wide bike prohibition (the AT is non-motorized and non-bicycle by NPS rule).

Helmet, age, license, registration

Maine's helmet rule is the cleanest in the Northeast: if you're under 16, wear a helmet; if you're 16 or older, the state has no opinion. The under-16 rule applies to ALL e-bike classes (not just Class 3), and to both operators and passengers.

Efficiency Maine e-bike rebate

Maine has a (small) e-bike incentive: LD 256 / SP 122 (131st Legislature, 2023) added e-bikes to the Efficiency Maine Electric Vehicle Rebate Program, signed by Gov. Mills on 8 June 2023. The pilot launched in January 2024 with a $50,000 cap — but the structure is an organizational pass-through, NOT direct-to-consumer: rebates are issued to participating public housing authorities, community-action agencies, and nonprofits that serve low-to-moderate income individuals, and the partner org then provides the bike to a qualifying recipient. Per partner-org rebate amounts: $300 per standard e-bike, $500 per e-cargo bike. Pilot application deadline was 7 March 2024. The rebate is administered by Efficiency Maine; check their current program page before applying — the structure may have changed since the pilot.

Pending + recent legislation

• LD 256 / SP 122 (131st Legislature, 2023) — added e-bikes to the Efficiency Maine rebate program, signed 8 June 2023. Pilot launched January 2024 as an organizational pass-through (NOT direct-to-consumer) — $300 per e-bike / $500 per e-cargo via partner orgs serving LMI individuals.
• 132nd Legislature (2025 First Special Session) — no enacted change to the e-bike classification or operating-rules framework. §101(22-B) and §2063(14) remain as written in PL 2019 Ch. 349.

Current law remains: §101(22-B) + §2063, sub-§14, unchanged since September 2019.

Sources

• 29-A MRSA §101 — definitions (incl. §101(22-B) electric bicycle)
• 29-A MRSA §2063, sub-§14 — operating rules
• Public Law 2019, Chapter 349 — enacting law
• LD 1222 / HP 882 — bill text
• Acadia NP — Superintendent's Compendium
• Acadia NP — Class 1 electric bicycles announcement
• Acadia NP — bicycling planning page
• DOI Secretary's Order 3376 — federal lands e-bike policy
• Eastern Trail Alliance — e-bike policy (Class 1 + 2 only)
• Portland Trails — FAQ (Class 1 + 2 only)
• Carrabassett Region NEMBA — e-bikes in the valley
• Down East Sunrise Trail — rules
• Baxter State Park — rules and regulations
• Maine DACF — Parks & Lands biking
• Efficiency Maine — Electric Vehicle Rebate Program