E-Bike Classes Explained

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What the classes actually are

Most US states use a three-class system taken from model legislation written by PeopleForBikes, the bicycle industry’s trade group, which said 43 states recognized it as of July 2024. It exists to separate bikes that behave like bicycles from vehicles that behave like mopeds, so that the first group can use bike infrastructure and the second cannot.

• Class 1 — the motor assists only while you pedal, and stops assisting at 20 mph. No throttle.
• Class 2 — a throttle can move the bike without pedaling, and the motor stops assisting at 20 mph either way.
• Class 3 — pedal assist only, up to 28 mph, and the bike must have a speedometer. There is no throttle: the model law gives Class 3 none, and since January 1, 2025 California Vehicle Code 312.5 has required a Class 3 motor that cannot move the bike on its own, apart from a walk-assist mode of up to 3.7 mph. A bike sold as “Class 2/3” can count as Class 3 only with its throttle switched off, and in California a throttle that can simply be switched back on may rule it out.

All three classes require a motor of less than 750 W. That is the wording of the model law and of the federal definition of a low-speed electric bicycle (15 U.S.C. 2085); California’s code says the motor may not exceed 750 watts, which matters for a bike rated at exactly 750 W (see below). The federal definition is a product-safety rule. Where you may ride is decided by state and local law.

The class decides where you can ride

This is the part that matters and the part that gets skipped. Speed is a difference of eight miles an hour. Access is a difference between being allowed on a trail and not.

• Paved bike and multi-use paths. Under the model law an e-bike may go wherever a bicycle may, paths included. A path’s manager can ban Class 1 or 2 only after notice and a public hearing, on safety or legal grounds, but can ban Class 3 without either. Some states and local agencies keep Class 3 to roads and on-street bike lanes.
• Dirt trails. The model law leaves natural-surface trails designated non-motorized to the agency that runs them, so each trail system sets its own rule, sometimes class by class.
• National parks allow e-bikes only where ordinary bicycles are allowed, and each park’s superintendent can restrict them or manage the classes differently (National Park Service). Away from roads open to cars, riding on the motor alone for extended periods is not allowed, which limits what a Class 2 throttle can do there.
• National forests treat every e-bike, Class 1 included, as a motor vehicle. E-bikes may use roads and trails open to motor vehicles; a non-motorized trail opens to them only through a formal designation process (US Forest Service).

So the fastest bike is often the one you are allowed to ride in the fewest places. If most of your riding is on paths and trails, a Class 1 bike is not a downgrade: it is the class with the fewest restrictions. Rules vary by state and local adoption, so check the specific path or trail before you buy.

What a Class 3 e-bike gets you, and the rules that come with it

Class 3 is a road commuter’s class. On a street with a 30 mph limit, the step from 20 to 28 mph is the difference between being passed constantly and moving close to the speed of traffic. It also shortens the ride: at a steady speed, eight miles takes 24 minutes at 20 mph and about 17 minutes at 28 mph. Nearly seven minutes saved each way over 240 commuting days comes to about 55 hours a year, more than a 40-hour work week. Lights and stops cut into both times, so treat that as the best case.

The speed costs watt-hours. Aerodynamic drag rises with the square of speed, and the power needed to hold a speed rises roughly with the cube, so energy per mile climbs quickly above 20 mph. As planning figures, allow about 15 Wh per mile on flat ground at moderate assist and 20 to 30 Wh per mile at sustained Class 3 pedal-assist speeds (25-28 mph). For the Lectric XPress2 Commuter, Lectric lists a 672 Wh battery and a 28 mph top speed: roughly 45 miles at the first rate and 22 to 34 miles at the second. If you buy Class 3 for the speed, buy more battery to go with it; the e-bike battery guide covers the arithmetic.

Class 3 also carries rules the other classes do not. The model law sets three:

• A minimum age of 16 — no one under 16 may operate a Class 3 bike, though a younger passenger may ride on one built to carry passengers.
• Helmets at any age — every rider and passenger must wear a bicycle helmet that meets CPSC or ASTM standards.
• A speedometer — every Class 3 bike must have one that shows speed in miles per hour.

California puts the age and helmet rules in Vehicle Code 21213 and the speedometer in the Class 3 definition in Vehicle Code 312.5. Not every state copied the model law’s numbers, so check your own before you buy.

Where states depart from the model law

States that adopted the classes did not all copy them word for word, and some never adopted them. The table sets the model law beside four state codes, each read from the legislature’s own published text. It covers the definitions and the rules that most change what you can buy or where you can ride, not every e-bike rule in each state.

Two of these change what a class label means. New York’s Class 3 is a different machine from the model law’s: it may run on its motor alone and stops assisting at 25 mph, while a 28 mph pedal-assist Class 3 bike keeps assisting past that cut-off and does not meet New York’s definition as written. Pennsylvania’s definition sets out no classes at all, so its test is the bike’s weight, wheel size, motor rating and motor-only speed rather than the class on the label.

Cities can add their own layer. New York lets cities, towns and villages set their own e-bike speed limits and ban e-bikes in some areas or entirely, and New York City has held every e-bike to 15 mph on its streets since October 2025 (NYC DOT), well under the 25 mph a Class 3 bike may assist to there.

Switchable bikes

Some bikes let you change class in the display settings. Velotric sells the Velotric Fold 1 Plus as switchable across Class 1, 2 and 3, and Himiway does the same with the Himiway A7 Commuter.

On a route that crosses a boundary this is useful: ride Class 3 on the road, switch to Class 1 before the park entrance. The switching is your job, and a path manager or officer may judge the bike by what it can do rather than how it is set at that moment, so check the path’s rules before relying on it.

Above Class 3 you are not on a bicycle

Plenty of machines are sold as e-bikes with motors rated above 750 W, or with assist that continues past 28 mph. Those fall outside the e-bike definition, so in states that follow the model law they are not bicycles. Depending on the state they may be mopeds or motor-driven cycles, which can bring registration, a license, insurance and limits on where you may ride. Rules vary by state.

Read the motor figures closely. Listings often lead with peak power, which runs well above a motor’s continuous rating, and neither the federal definition, the model law nor California’s code says which figure the limit refers to. Some bikes are over the limit on both figures: for the Heybike Saturn, Heybike lists a 1,000 W continuous, 1,800 W peak motor (Heybike’s spec page), which is outside the less-than-750 W definition whatever class its speed settings suggest. If a listing gives only a peak figure above 750 W, ask the maker for the continuous rating before you buy.

Unlocking a speed beyond the class limit has the same effect. The model law bars tampering with an e-bike’s motor-powered speed unless the class label is replaced to match. California allows a change only if the bike still meets the definition and gets a corrected label, and bans selling any product, device or app that takes a bike outside it (Vehicle Code 24016).

Is a 750 W motor inside the limit?

Some bikes are sold with a motor rated at exactly 750 W. For the XPress2 Commuter mentioned above, Lectric lists a 750 W rear hub motor, 1,310 W peak, and says the bike can ride as Class 1, 2 or 3 where state law permits. Whether a 750 W rating fits depends on whose wording you read:

• “Less than 750 watts” — the federal product definition, the model law and New York. Read literally, a motor rated at exactly 750 W is not less than 750 W, so it sits on the line.
• “Does not exceed 750 watts” — California. A 750 W motor fits, and it also fits Pennsylvania’s “rated at not more than 750 watts.”
• No wattage figure — Oregon since 2025, which defines its classes by how the motor assists and the speed at which it stops.

Only Pennsylvania’s text calls the figure a rating; the others give a number without saying whether it means the continuous rating or the peak. California adds a test of its own: a bike the maker intends to be modifiable past 750 W may not be sold as an electric bicycle there, whatever its label says.

In practice, read your state’s definition for the motor wording, then compare it with the motor wattage on the bike’s class label, which the model law, California and New York all require. A motor rated below 750 W, such as 500 W, fits every version of the wording.

How to tell what class a bike is

Look for the label. The model law requires a permanent label on every new e-bike stating its class, top assisted speed and motor wattage, and California has required one since January 1, 2017 (Vehicle Code 312.5). A bike with no label was probably not built to the class system, and where you live that can change how it is treated for registration and insurance.

• No throttle, assist cuts out at 20 mph — Class 1.
• Throttle, assist cuts out at 20 mph — Class 2.
• No throttle, assists to 28 mph, has a speedometer — Class 3.

Common questions

Do I need a license for a Class 1, 2 or 3 e-bike? Not under the model law, which exempts e-bikes from driver’s license, registration and financial-responsibility (insurance) rules, and not in California (Vehicle Code 24016). Rules vary by state, and above Class 3 the answer changes.

Can I ride a Class 2 on a bike path? Usually, where bicycles are allowed: under the model law a path’s manager can ban Class 1 or 2 only after notice and a public hearing. Dirt trails, national parks and national forests set their own rules, so check the specific path.

Is a Class 3 bike faster uphill? Not necessarily. The 28 mph figure is a cut-off, not a capability. Climbing is decided by motor torque and gearing, and a Class 1 mid-drive can out-climb a Class 3 hub motor; the hub motor vs mid-drive guide explains why.

Does the class affect insurance? Do not assume any class is covered. The standard ISO homeowners form defines a motor vehicle broadly enough that an owned e-bike can be excluded from liability coverage away from home, as a 2021 Q&A from the Independent Insurance Agents & Brokers of America explains, and insurers treat e-bikes differently. Ask yours in writing, and look at a dedicated e-bike policy if the answer is no. A machine above Class 3 may need moped-style insurance where you live.