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California E-Bike Classes: Who Can Ride Class 3 and Who Must Wear a Helmet

By Cycle99 Editorial Team ⏱ 6 min read 📂 E-Bikes

California state law sets no minimum age for a Class 1 or Class 2 e-bike, though San Diego County cities may bar children under 12 from them. Nobody under 16 may operate a Class 3 e-bike, and every Class 3 rider and passenger needs a helmet at any age. Separately, anyone under 18 needs a helmet on any bicycle, e-bikes included. No class needs a driver’s license, registration, license plate or insurance. This page covers California only, as of October 2026.

The three classes

The DMV handbook dates California’s three-class system to January 1, 2016. Every class shares one baseline: a bicycle with fully operable pedals and an electric motor that does not exceed 750 watts. An electric bicycle is legally a bicycle.

Class What the motor does Assistance ends at Extra detail
Class 1 Assists only while you pedal 20 mph (32 km/h) No statewide age rule; may have walk mode
Class 2 May move the bike without pedaling (throttle) 20 mph (32 km/h) No statewide age rule
Class 3 Assists only while you pedal 28 mph (45 km/h) Must have a speedometer; may have walk mode

Pedal assist means the motor adds power only while you turn the cranks; a throttle drives the bike without pedaling (see E-Bike Throttle vs Pedal Assist). Class 1 and Class 3 bikes may also have a “walk mode” that moves the bike on motor power alone, up to 3.7 mph (6 km/h). The cutoff limits motor help, not your speed: CalBike notes a rider can go faster by pedaling harder, but the motor adds nothing beyond the limit.

Vehicle Code section 312.5 defines the motor as one that “does not exceed 750 watts of power,” so a 750 W motor fits the definition. The DMV handbook says “less than 750 watts,” but its footer carries an April 2016 revision date; follow the current statute.

Who may ride which class

Rider Class 1 or Class 2 Class 3
Under 16 Allowed statewide (see San Diego County below); helmet required Not allowed
16 or 17 Allowed; helmet required Allowed; helmet required
18 or older Allowed; no state helmet rule among those covered here Allowed; helmet required

San Diego County exception. Vehicle Code section 21214.7, the San Diego Electric Bicycle Safety Pilot Program (AB 2234, signed in late September 2024), lets a local authority in the county prohibit a person under 12 from operating a Class 1 or 2 e-bike by ordinance or resolution. The section is repealed on January 1, 2029. La Mesa’s council passed such a pilot on May 12, 2026, and the Times of San Diego reported that Poway, Chula Vista, Carlsbad and Santee had adopted age restrictions too. One report describes La Mesa’s rule as covering children “12 years old and under,” so read your own city’s ordinance.

The Class 3 age floor

Section 21213(a) says a person under 16 shall not operate a Class 3 e-bike, and the DMV handbook agrees. Section 22651.08(a)(2) lets a peace officer remove a Class 3 e-bike operated in violation of that rule. Release goes to the owner, the violator or their agent after a minimum of 48 hours, provided the request is made during normal business hours and the removal, seizure and storage costs have been paid.

Helmets: two rules that overlap

  1. Class 3 rule. Section 21213(b) requires a properly fitted and fastened helmet for anyone who operates a Class 3 e-bike or rides on one as a passenger, at any age, on a street, bikeway or public bicycle path or trail.
  2. Under-18 rule. Section 21212(a) bars a person under 18 from operating a bicycle, or riding as a passenger, without a helmet. It covers the same kinds of streets and paths, including a child in a restraining seat or a trailer towed by the bicycle.

Both rules require a helmet that meets ASTM or CPSC standards (the American Society for Testing and Materials, or the United States Consumer Product Safety Commission), so wear a certified bicycle helmet that fits; see Cycling Helmets: How They Work, MIPS, and Choosing the Right One. Because an e-bike is legally a bicycle, the under-18 rule applies on every class, while an adult on a Class 1 is covered by neither rule. Class 3 assistance continues up to 28 mph (45 km/h).

Passengers on a Class 3 bike

The statute regulates Class 3 passengers rather than banning them. Section 21213(b) names anyone who rides “upon a class 3 electric bicycle as a passenger,” and its helmet requirement extends to a person in a restraining seat attached to the bicycle or in a trailer towed by it. The CHP bulletin and CalBike both require helmets for Class 3 passengers of every age, and CalBike adds that e-bikes set up to accommodate passengers may carry one.

The DMV handbook’s Class 3 list says the operator “Must not transport passengers,” which does not match the statute’s text. Carry a passenger only on a bike built for one, and only in a helmet that fits securely. Cycling with Kids explains the seat and trailer options.

No license, registration, plate or insurance, if it is really an e-bike

Section 24016(b) says insurance, a driver’s license, registration and license plates are not required for riding an electric bicycle. That exemption belongs to vehicles that meet the e-bike definition. The CHP lists as “not electric bicycles” any vehicle modified to exceed 20 mph on motor power alone or to have more than 750 watts, and CalBike warns that some bikes sold in California may not be street-legal under the state’s e-bike regulations. CalBike quotes the law as requiring a permanently affixed label showing the classification number, top assisted speed and motor wattage. Check it before you buy.

Do not unlock or defeat a speed limiter. Section 24016(d) prohibits tampering with or modifying an e-bike to change its speed capability unless the person appropriately replaces the manufacturer’s label to show the new classification, and the bike must continue to meet the definition of an electric bicycle after the modification.

Where classes may ride, and what cities add

Section 21207.5, last updated January 1, 2023, allows e-bikes of all classes anywhere a bicycle can be ridden, with these exceptions: a local authority or public agency may prohibit an e-bike, or any class of e-bike, by ordinance on an equestrian, hiking or recreational trail it controls, and the Department of Parks and Recreation may prohibit them on any bicycle path or trail within its jurisdiction. The section places no Class 3 restriction on bike lanes. The DMV handbook still says a Class 3 operator may use a bicycle lane “if authorized by local authority or ordinance,” but that line comes from a revision dated April 2016, before the 2023 update.

The CHP bulletin covers only Vehicle Code requirements and notes that counties, cities and local authorities may have their own ordinances. For broader context, see E-Bike Laws: What You Can and Cannot Do (US, UK and EU). This page is general information, not legal advice; confirm the current Vehicle Code text on the California Legislative Information site, or ask the CHP or your local police, before relying on an edge case.

Sources

Last reviewed: October 2026.

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