Police reports, news stories and sales listings use “e-bike,” “moped,” “scooter” and “motorbike” almost interchangeably. Massachusetts law does not. Each word maps to a separate legal category with its own rules on licenses, registration, helmets, age, speed and where you can ride, and the category also decides which criminal statutes apply. The state’s Special Commission on Micromobility put the problem plainly in its January 2026 report: devices “are often marketed as e-bikes but do not meet the current e-bike definitions in Massachusetts law.”
Here is how the statutes sort them, based on G.L. c. 90 and c. 85 as they read today.
The categories at a glance
| Category | What it is (G.L. c. 90, § 1) | License | Registration | Helmet | Top legal speed | Sidewalks |
|---|---|---|---|---|---|---|
| Bicycle | Human powered | No | No | 16 and under | Traffic law | Outside business districts when needed for safety, unless local ordinance bars it |
| Electric bicycle (Class 1 or 2) | Working pedals, motor of 750 watts or less, motor help stops at 20 mph | No | No | 16 and under | Motor assist to 20 mph | Never |
| Motorized bicycle (moped) | Helper motor up to 50 cc, automatic transmission, top speed of 30 mph or less | License or learner’s permit; 16 or older | Dealer-affixed sticker or plate | All riders and passengers | 25 mph | Not addressed in § 1B; allowed in bike lanes, barred from off-street paths |
| Motorized scooter | Two or three wheels, handlebars, stood or sat on, electric or gas motor | License or learner’s permit | None available | All riders | 20 mph, daylight only | Not addressed in § 1E; local rules vary |
The bicycle and e-bike rows come from G.L. c. 85, §§ 11B and 11B¾. The moped row comes from G.L. c. 90, §§ 1B and 1D, and the scooter row from § 1E. A motorcycle is a motor vehicle and is outside these small-vehicle rules entirely. Off-road machines, including electric dirt bikes sold for trail use, are recreation vehicles under a separate chapter, G.L. c. 90B, and are enforced by the Massachusetts Environmental Police, the commission’s report notes.
The line between e-bike and moped
An “electric bicycle” must have “fully operable pedals and an electric motor of 750 watts or less” and must meet the Class 1 or Class 2 definition, meaning the motor stops helping at 20 mph. A “motorized bicycle” is “a pedal bicycle which has a helper motor, or a non-pedal bicycle which has a motor, with a cylinder capacity not exceeding fifty cubic centimeters, an automatic transmission, and which is capable of a maximum speed of no more than thirty miles per hour.” The statute adds that “motorized bicycle” “shall not include an electric bicycle.”
The moped definition is written around a gas engine’s cylinder capacity, which leaves open how an electric device faster than 20 mph should be classified. Both pending versions of the economic development bill would rewrite it to cover a motor “not exceeding 50 cubic centimeters or the hybrid or electric powered equivalent.”
The difference matters because the moped rules in G.L. c. 90, § 1B are much stricter than the e-bike rules:
- no operation on any way by anyone under 16, or by anyone without a valid driver’s license or learner’s permit;
- a 25 mph maximum;
- a helmet for every operator and passenger;
- allowed in bike lanes, but “excluded from off-street recreational bicycle paths”; and
- a numbered sticker or plate, which a dealer must affix at sale under § 1D.
The line between scooter and everything else
A “motorized scooter” is “any 2 wheeled tandem or 3 wheeled device, that has handlebars, designed to be stood or sat upon by the operator, powered by an electric or gas powered motor.” The definition expressly “shall not include a motorcycle, electric bicycle or motorized bicycle or a 3 wheeled motorized wheelchair.” So a seated electric machine with no working pedals is a moped if it meets the moped specifications, and otherwise may be a scooter or, if it is fast enough, a motorcycle. Under the Registry’s regulations, as the commission summarized them, a vehicle that fits the motorcycle definition with a top speed between 30 and 40 mph should be registered as a “limited use motorcycle.”
Why the category matters in court
The definition of “motor vehicles” in G.L. c. 90, § 1 “shall not include electric bicycles or motorized bicycles.” Many criminal statutes in chapter 90 apply only to “motor vehicles,” and the Appeals Court has twice had to decide whether one reaches a moped.
- Drunk driving applies to mopeds. In Commonwealth v. Griswold, 17 Mass. App. Ct. 461 (1984), a moped rider argued he could not be charged with operating under the influence because mopeds are excluded from the definition of motor vehicles. The court disagreed. Because § 1B makes moped operators “subject to the traffic laws and regulations of the commonwealth,” the court held, “the Legislature manifested its intention to make those portions of c. 90 that are concerned with operation, such as G. L. c. 90, § 24(1)(a), also apply to operators of motorized bicycles.”
- Driving with a suspended license does not. In Commonwealth v. Lopez, No. 15-P-1207 (Mass. App. Ct. May 10, 2017), the defendant rode a moped while his license was suspended and was convicted under G.L. c. 90, § 23, which applies to motor vehicles. The Appeals Court reversed. It explained that a traffic law “readily can be understood as one that governs how vehicles are operated,” while § 23 “addresses the threshold question whether the driver can operate a vehicle at all.” Because § 1B already punishes riding a moped without a valid license with “specific, low-level penalties,” and because both readings were plausible, the rule of lenity required reversal. (We published the full opinion in 2017.) The defendant had been sentenced to 90 days in a house of correction; § 1B carries fines only.
Ordinary bicycle riders, and through § 11B¾ e-bike riders, are also “subject to the traffic laws and regulations of the commonwealth” under G.L. c. 85, § 11B. We found no published Massachusetts appellate decision applying Griswold‘s reasoning to an e-bike rider in CourtListener’s database.
The pending economic development bill would settle part of this by statute. Both the House and Senate versions say micromobility devices “shall be subject to all civil and criminal fines and penalties applicable to the operation of a motor vehicle under sections 24 to 24R, inclusive, 24V and 25” of chapter 90, which include the OUI statute, with administrative penalties applying only if the registrar adopts them by regulation.
Calling it an e-bike does not make it one
The commission’s report described electric motorcycles, or e-motos, that “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.” It said that if such machines “were actually motorcycles, they would need to follow Federal Motor Vehicle Safety Standards.” MassDOT’s chief innovation officer, Kris Carter, told the MassDOT board in February that the youth crashes reported in the past year as e-bike crashes involved devices that “were all things that were out-of-class, not meeting that definition,” Streetsblog Massachusetts reported.
For a buyer, the practical test is the statute’s three-part definition: working pedals, a motor of 750 watts or less, and motor assistance that stops at 20 mph. Since 2023, state law has required every e-bike to carry a permanent label showing its class, top assisted speed and motor wattage.
Frequently asked questions
What is the difference between an e-bike and a moped in Massachusetts?
An e-bike has working pedals, a motor of 750 watts or less, and motor assistance that stops at 20 mph. It needs no license or registration. A moped, legally a “motorized bicycle,” requires a license or learner’s permit, a minimum age of 16, a helmet and a numbered sticker or plate, and is limited to 25 mph.
Is an electric scooter a moped in Massachusetts?
No. State law treats a “motorized scooter” as its own category, defined as a two- or three-wheeled device with handlebars that is stood or sat upon and powered by a motor. Scooters require a license or permit, are limited to 20 mph and may not be ridden after sunset.
Can you get an OUI on a moped in Massachusetts?
Yes. In Commonwealth v. Griswold, 17 Mass. App. Ct. 461 (1984), the Appeals Court held that the OUI statute applies to operators of motorized bicycles because G.L. c. 90, § 1B makes them subject to the state’s traffic laws.
Is riding a moped with a suspended license a crime?
It violates G.L. c. 90, § 1B, which carries fines. In Commonwealth v. Lopez (2017), the Appeals Court held it is not a violation of § 23, the motor vehicle suspended-license statute, which carries jail time.
Are electric dirt bikes street legal in Massachusetts?
An electric dirt bike that exceeds the e-bike limits is not an e-bike under state law. Off-road recreation vehicles are governed by G.L. c. 90B. The state micromobility commission wrote that high-powered e-motos treated as e-bikes would, if they “were actually motorcycles,” need to meet federal motor vehicle safety standards.
Sources: G.L. c. 90, §§ 1, 1B, 1D, 1E and 23; G.L. c. 85, §§ 11B and 11B¾, read at malegislature.gov. Commonwealth v. Griswold, 17 Mass. App. Ct. 461 (1984), and Commonwealth v. Lopez, No. 15-P-1207 (Mass. App. Ct. May 10, 2017), read in full. H.5576 and S.3228 (2026). Special Commission on Micromobility, final report, January 2026; Streetsblog Massachusetts, February 27, 2026. General information, not legal advice.