Massachusetts has had a written e-bike law since 2022, and most riders have never read it. It is short. It defines two classes of electric bicycle, gives their riders the same rights and duties as ordinary cyclists, keeps them off sidewalks, and lets cities, towns and state agencies decide whether they belong on bike paths. It does not require a license, a registration or insurance. It also leaves out the fastest pedal-assist bikes now sold: a so-called Class 3 e-bike, which assists up to 28 miles per hour, is not an “electric bicycle” under Massachusetts law at all.
This guide covers the law as it stands today, based on the text of the statutes at malegislature.gov. A separate article covers the pending legislation that would rewrite these rules starting in 2028.
What counts as an e-bike in Massachusetts
The definitions are in G.L. c. 90, § 1. An “electric bicycle” is “a bicycle or tricycle equipped with fully operable pedals and an electric motor of 750 watts or less that meets the requirements of a class 1 electric bicycle or a class 2 electric bicycle.” Two classes follow:
- Class 1: a motor “that provides assistance only when the rider is pedaling and that ceases to provide assistance when the bicycle reaches the speed of 20 miles per hour.” This is pedal assist with no throttle.
- Class 2: a motor “that may be used exclusively to propel the bicycle and that is not capable of providing assistance when the bicycle reaches the speed of 20 miles per hour.” This is the throttle bike, also capped at 20 mph.
All three parts matter. A bike with working pedals, a motor of 750 watts or less, and motor help that stops at 20 mph is an e-bike under state law. A device without working pedals, with a bigger motor, or with assistance above 20 mph is not, whatever the box or the listing calls it.
An e-bike is not a motor vehicle
The same section says the definition of “motor vehicles” “shall not include electric bicycles or motorized bicycles,” and that the definition of “motorized bicycle” (the legal term for a moped) “shall not include an electric bicycle.” That has practical consequences:
- No driver’s license. The license and learner’s permit requirement in G.L. c. 90, § 1B applies to motorized bicycles. A Class 1 or Class 2 e-bike is not one.
- No registration or plate. Registration under chapter 90 applies to motor vehicles and, by separate statute, to mopeds. E-bikes are outside both.
- No minimum age in state law. The 16-year minimum in § 1B is a moped rule. State law sets no minimum age for a Class 1 or Class 2 e-bike, though some towns and schools have adopted their own limits.
These rules came from Chapter 176 of the Acts of 2022, the transportation bond bill approved on August 10, 2022, which inserted the e-bike definitions into chapter 90 and a new e-bike section into chapter 85.
The rules of the road: G.L. c. 85, § 11B¾
The core rule is one sentence. An e-bike and its rider “shall be afforded all of the rights and privileges, and shall be subject to all of the duties, of the operator of a bicycle,” under the state’s bicycle statutes and “any general or special law, regulation or local ordinance,” with one stated exception: “electric bicycles shall not be ridden or operated on sidewalks.”
Because e-bike riders take on the bicycle rules, the main bicycle statute, G.L. c. 85, § 11B, applies to them. Among its requirements:
- Traffic laws apply. Cyclists “shall be subject to the traffic laws and regulations of the commonwealth,” may use all public ways except limited-access highways posted against bicycles, and may keep to the right when passing a moving car.
- Helmets for 16 and under. Any person “16 years of age or younger” operating or riding as a passenger on a bicycle on a public way, bike path or other public right of way must wear a helmet that meets federal Consumer Product Safety Commission standards. The statute adds that a violation of the helmet rule “shall not be used as evidence of contributory negligence in any civil action.”
- No more than two abreast, and single file within one lane on multi-lane roads.
- Lights at night. From a half hour after sunset to a half hour before sunrise, a white front lamp visible from 500 feet and a red rear lamp and reflector visible from 600 feet, plus pedal or ankle reflectors.
- One hand on the handlebars at all times, packages only in a basket or rack, and no towing behind other vehicles.
- Reporting crashes. A rider must report a crash involving personal injury or more than $100 in property damage to the local police department.
- Parents are covered too. A parent or guardian “shall not authorize or knowingly permit” a minor to break these rules, and police may impound a bicycle ridden by a minor in violation for up to 15 days.
The sidewalk rule is the clearest difference between a pedal bike and an e-bike. An ordinary bicycle may be ridden on a sidewalk outside a business district “when necessary in the interest of safety, unless otherwise directed by local ordinance.” An e-bike may not be ridden on any sidewalk.
Bike paths and trails are a local decision
Section 11B¾ gives control of paths to whoever runs them.
- Paved bike paths and bikeways. A city, town, local authority or state agency with jurisdiction may, “after public notice and a public hearing,” adopt rules “prohibiting or otherwise regulating” e-bikes on its paths, “including, but not limited to, the imposition of speed limits.” Without such a rule, the e-bike follows the bicycle rules.
- Natural-surface trails. The default runs the other way. An e-bike “shall not be operated” on a trail designated for nonmotorized traffic if it has a natural surface made by clearing and grading soil, unless the agency in charge permits it after notice and a hearing.
The state’s Special Commission on Micromobility, in its January 2026 report, summarized the Department of Conservation and Recreation’s rules for its own properties: Class 1 e-bikes are allowed on DCR paths wider than eight feet, motorized devices are largely barred from DCR trails, and e-bikes are prohibited on the Appalachian Trail. The commission also found that local rules vary widely. Nantucket, for example, bars Class 3 e-bikes from its paths, according to the report.
Labels and tampering
- A permanent label. Since January 1, 2023, manufacturers and distributors must permanently affix a label in a prominent location showing the bike’s “classification number, top assisted speed and motor wattage.”
- No speed tampering. “No person shall tamper with or modify an electric bicycle so as to change the motor-powered speed capability or engagement” of the bike unless the person replaces the label to match. A bike modified to assist past 20 mph no longer meets either class definition.
- Federal standards. E-bikes must meet the federal Consumer Product Safety Commission’s equipment and manufacturing requirements for bicycles.
The statute also authorizes the secretary of transportation to adopt e-bike regulations on safe operation and labeling.
The Class 3 gap, and the bikes that are not bikes
Most states that classify e-bikes use three classes. The commission’s report counted 36 states and Washington, D.C. using the three-class system and noted that “in Massachusetts, Class 1 and Class 2 e-bikes are defined in law, but Class 3 e-bikes are not.” A Class 3 e-bike, under the federal definition the report cites, is pedal assist only, up to 28 mph. Because Massachusetts limits “electric bicycle” to Classes 1 and 2, a Class 3 bike falls outside the state’s e-bike rules. State law does not say plainly where it falls instead; the moped definition is written around engine cylinder capacity, and the pending bills would add an “electric powered equivalent” to it.
The commission was more pointed about a different category: electric dirt bikes and electric motorcycles, often called e-motos. “Some may look like fat-tire bicycles but have motors up to 5000 watts, more than six times the maximum wattage for an e-bike as defined in Massachusetts and federal law,” the report said. It found that devices “are often marketed as e-bikes but do not meet the current e-bike definitions in Massachusetts law.” MassDOT’s chief innovation officer, Kris Carter, told the MassDOT board that recent youth crashes reported as e-bike crashes involved devices that were “out-of-class,” Streetsblog Massachusetts reported. Off-road recreational vehicles are governed by a different chapter, G.L. c. 90B, and enforced by the Massachusetts Environmental Police, the report notes.
Why the rules are getting attention
Doctors at several pediatric trauma centers told WBUR in August that serious injuries to children on e-bikes and e-scooters had risen sharply; one UMass Memorial surgeon estimated “close to a tenfold increase” in ER visits over the prior year. Milford’s police chief told WBUR that “every one of these e-bikes that we have interaction with are usually modified” to exceed 40 mph. In Methuen, the school committee began discussing in September whether to restrict students without a driver’s license from riding e-bikes on school grounds, CBS Boston reported.
The Legislature is considering a replacement for this framework that would sort every small electric device by top speed, set statewide age and helmet rules and require registration and insurance for mopeds. Both the House and Senate versions passed in July as part of the economic development bill, which has been in a conference committee since July 30. Most of those provisions would not take effect before January 1, 2028. Our guide to the pending bill covers what it would change, and our explainer on e-bikes, mopeds and scooters covers how the current categories differ.
Frequently asked questions
Do you need a license to ride an e-bike in Massachusetts?
No, for a Class 1 or Class 2 e-bike. State law excludes electric bicycles from the definitions of “motor vehicle” and “motorized bicycle,” so the license requirement for mopeds in G.L. c. 90, § 1B does not apply.
Can you ride an e-bike on the sidewalk in Massachusetts?
No. G.L. c. 85, § 11B¾ says “electric bicycles shall not be ridden or operated on sidewalks.” Ordinary bicycles may use sidewalks outside business districts when necessary for safety, unless a local ordinance says otherwise.
Is there an age limit for e-bikes in Massachusetts?
State law sets no minimum age for Class 1 or Class 2 e-bikes. Riders 16 and younger must wear a helmet. Some municipalities and school districts have adopted or are considering their own limits, and the pending legislation would add statewide age limits.
Are Class 3 e-bikes legal in Massachusetts?
Massachusetts law does not define Class 3 e-bikes, and its definition of “electric bicycle” covers only Classes 1 and 2, so a 28 mph pedal-assist bike is outside the state’s e-bike rules. Both versions of the pending economic development bill would add a Class 3 definition.
Can my town ban e-bikes from the bike path?
Yes. Under G.L. c. 85, § 11B¾(c), a municipality, local authority or state agency with jurisdiction over a bike path may prohibit or regulate e-bikes on it, including setting speed limits, after public notice and a public hearing.
Is it illegal to unlock or modify an e-bike’s speed limit?
Under § 11B¾(g), no one may modify an e-bike to change its motor-powered speed capability unless the person replaces the required label. A bike that assists above 20 mph no longer meets the Class 1 or Class 2 definition.
Sources: G.L. c. 90, §§ 1 and 1B; G.L. c. 85, §§ 11B and 11B¾; Chapter 176 of the Acts of 2022, all read at malegislature.gov. Special Commission on Micromobility, final report, January 2026 (mass.gov). Streetsblog Massachusetts, February 27, 2026; WBUR, August 19, 2026; CBS Boston, September 16, 2026. General information, not legal advice.