Hawaii has drawn a firmer legal line between ebikes and motorcycle-like electric vehicles. On July 15, 2026, Governor Josh Green signed House Bill 2021 as Act 259, creating a statewide three-class system and tightening rules for young riders, sellers and high-powered devices.
The law does not ban ebikes or every fast electric two-wheeler. Instead, it defines which vehicles qualify as electric bicycles, prohibits certain unregistered high-speed devices from public spaces and pushes registered mopeds and electric motorcycles out of bike lanes and paths.
Injuries involving vehicles reported as ebikes have increased in Hawaii, but that label has covered everything from pedal-assist bicycles to electric dirt bikes. Act 259 attempts to make the categories easier to identify.
Most of the law took effect when it was signed. A separate section governing labels and seller disclosures is scheduled to take effect November 12, 2026—120 days after approval—unless Hawaii adopts implementing rules sooner.
Hawaii adopts the three-class ebike system
Under the new framework, an electric bicycle must have fully operable pedals and a motor rated at no more than 750 watts. Qualifying bikes are divided into three familiar classes:
|
Class |
How the motor operates |
Assistance cutoff |
|
Class 1 |
Pedal assist only |
20 mph |
|
Class 2 |
May propel the bike without pedaling |
20 mph |
|
Class 3 |
Pedal assist only and equipped with a speedometer |
28 mph |
These are motor-assistance cutoffs, not absolute limits on speed reached through pedaling or gravity.
Act 259 separately defines a “high-speed electric device” as a device with a motor exceeding 750 watts and capable of more than 28 mph. Unless it qualifies as an excluded, properly registered vehicle, that type of device cannot be operated on public roads, sidewalks, bike lanes, travel paths or other public areas.
The word “and” matters. The Hawaii Department of Transportation’s announcement summarizes the restriction using “or,” but the signed statute requires both conditions. A vehicle exceeding only one threshold would not qualify as an ebike but might not fit the high-speed-device definition either—an issue HDOT rules may need to clarify.
Registered mopeds and electric motorcycles retain a pathway onto public roads under separate motor-vehicle rules, but they are prohibited from bicycle lanes and paths. “E-moto” is a useful consumer term, not a single legal classification in Act 259.
Registration, helmets and rules for younger riders
Hawaii already required permanent registration for low-speed electric bicycles, so Act 259 does not start from scratch. It applies the requirement to the new classifications. Owners pay a permanent $30 fee through their county finance office, and registration is required for public roads, sidewalks and bicycle facilities.
Failure to register may lead to a citation or temporary impoundment. The statute allows an unregistered bicycle to be held for 10 days and reclaimed after payment of the fee and a $25 penalty. Authorities may also seize non-road-legal or nonconforming devices, subject to the law’s process and future rules.
The rider rules also include several major changes:
- Bicycle and ebike riders under 18 must wear a properly fitted helmet on streets, bikeways and other public property.
- Riders under 16 may operate Class 2 or Class 3 ebikes only under direct adult supervision. Act 259 does not establish the same statewide supervision requirement for Class 1 riders.
- All three ebike classes may use sidewalks at no more than 10 mph, except in business districts or where county rules prohibit or further restrict them.
- Wheelies, stunts and other unsafe riding positions are prohibited on public rights-of-way, except during properly permitted events.
- A legal, classified ebike does not require motor-vehicle insurance.
Counties may add restrictions, so riders still need to check local rules.
New obligations reach the online checkout page
Once Section 2 takes effect, manufacturers and distributors must label qualifying ebikes with their class, assisted-speed limit and motor wattage. Physical sellers must post a notice and provide buyers with information about Hawaii law.
Online and third-party marketplace sellers delivering into Hawaii must disclose whether an ebike is legal on public roads, sidewalks or bike lanes, along with relevant registration, equipment, helmet and age rules. HDOT may impose administrative fines of up to $500 per violation.
This provision addresses the problem before purchase: calling a product an “ebike” will not determine where it may legally be used.
Rising injuries pushed lawmakers to act
Honolulu Civil Beat reported that Hawaii Department of Health data showed reported ebike-related injuries increasing from 106 in 2022 to 244 in 2025. About one-third of the 2025 injuries involved people under 18, and more than half of the injured riders reportedly were not wearing helmets. Honolulu EMS separately recorded an increase from 110 incidents in 2023 to 181 in 2025.
Those numbers show rising incident counts, not that each rider’s risk doubled. They do not account for growth in ridership or miles traveled, and the old reporting categories make it difficult to separate compliant ebikes from electric dirt bikes, mopeds and other devices.
The new definitions will improve the data only if police, hospitals and transportation agencies use them consistently.
Hawaii joins a broader regulatory shift
Hawaii’s approach reflects a broader trend. California also uses three classes and has tightened the distinction between compliant ebikes and vehicles that can be modified beyond legal speed limits. Manufacturers increasingly must tailor products to different states.
Trek’s Borrego+ lineup is one example. The standard model is Class 2, with throttle and pedal assistance capped at 20 mph. The Borrego+ S assists pedaling up to 28 mph, but Trek says it cannot be sold or shipped in California under that state’s rules. As noted in our Trek Borrego+ review, the two-model strategy avoids treating every state as though its laws are identical.
Hawaii’s seller rules could push more brands toward that clarity. Companies may need to block certain configurations, rewrite product pages or make legal modes harder to alter. But registration and a more complicated buying process could also discourage adoption. Clear classifications should protect compliant ebikes from confusion with faster machines, not make lawful riding feel needlessly difficult.
What Hawaii still needs to clarify
HDOT says it will draft implementing rules. Questions remain about whether “motor wattage” means nominal, continuous or peak output; how officers will evaluate modified vehicles; and how Hawaii will enforce disclosures against distant online sellers.
The two-part high-speed definition also leaves an awkward middle ground for vehicles exceeding only one threshold. Buyers should not assume an advertised class label automatically makes a vehicle legal.
Our take
Hawaii is trying to preserve a place for legal ebikes while moving motorcycle-like devices out of bicycle infrastructure. Success will depend on honest product descriptions, workable enforcement standards and crash reports that distinguish ebikes from e-motos—without making lawful riders feel that choosing an ebike has become more trouble than it is worth.
The writing is on the wall for the industry: states are becoming less willing to let speed-unlocked or high-powered vehicles borrow the ebike label. Brands that build clearly compliant products for specific markets will be better positioned than companies that leave riders to decipher the law after checkout.
FAQ: Ebike laws in Hawaii
Do ebikes have to be registered in Hawaii?
Yes. A qualifying electric bicycle must be permanently registered through the appropriate county finance office. The registration fee is $30, and registration is required before operating on public roads, sidewalks or bicycle facilities.
How old must you be to ride an ebike in Hawaii?
Act 259 does not establish a separate statewide minimum age for Class 1 ebikes. Riders under 16 need direct adult supervision when operating Class 2 or Class 3 ebikes. County or property-specific rules may add restrictions.
Are helmets required for ebike riders in Hawaii?
Riders under 18 must wear a properly fitted helmet when operating a bicycle or ebike on a street, bikeway or other public property. Adults should still wear helmets, but Act 259 does not impose this statewide requirement on riders 18 and older.
Can ebikes use sidewalks in Hawaii?
Class 1, 2 and 3 ebikes may be ridden on sidewalks at speeds no higher than 10 mph, except in business districts or where county ordinances prohibit or further restrict their use.
Are e-motos banned in Hawaii?
Not categorically. Unregistered high-speed electric devices are prohibited from public areas. Properly registered mopeds and electric motorcycles may use public roadways when they meet the applicable legal requirements, but they cannot use bicycle lanes or paths.
When do Hawaii’s new seller-disclosure rules take effect?
Section 2 is scheduled to take effect November 12, 2026, unless HDOT adopts implementing rules earlier. It covers permanent labels, point-of-sale notices, buyer information and online disclosures.
