Jul 7th 2025

Understanding Ebike Classifications and US Riding Rules

E-bike Classes Explained

Many states have adopted a three-class system to categorize e-bikes based on their motor assistance type and maximum assisted speed. This classification helps determine where and how e-bikes can be ridden:

Class

Max Assisted Speed (Pedal-Assist)

Max Speed (Throttle, if applicable)

Motor Activation

1

20 mph

N/A

Pedal-assist only

2

20 mph

20 mph

Pedal-assist and/or

throttle-actuated

3

28 mph

20 mph (if throttle equipped)

Pedal-assist only (to 28 mph)

Class

Common Allowed Access (General Guide)

1

Bike paths, multi-use trails, roads (where bicycles are allowed)

2

Bike paths, multi-use trails, roads (where bicycles are allowed)

3

Roads, bike lanes; often restricted from multi-use trails and bike paths

  • Class 1: E-bikes provide motor assistance only when the rider is pedaling, and this assistance cuts out once the speed reaches 20 mph. They offer a riding experience closest to a traditional bicycle, with an added boost, making them popular for recreational use and on bike paths.
  • Class 2: E-bikes in this class are equipped with a throttle that can power the motor up to 20 mph, regardless of whether the rider is pedaling. They also typically offer pedal-assist modes. The Vulcan Bikes "Breeze", "The OG", and "Lil' G" models are factory locked as Class 2 e-bikes, providing throttle-on-demand convenience.
  • Class 3: These are the fastest street-legal class of e-bikes, providing pedal assistance up to 28 mph. While some Class 3 e-bikes may have a throttle, the throttle assistance is generally limited to 20 mph. Due to their higher speed capabilities, Class 3 e-bikes are often intended for commuting on roads and are typically subject to more stringent regulations, such as age restrictions and helmet requirements.
  • Vulcan Bikes - "The OG",  features "Off-Road Modes" that allow speeds exceeding the Class 2 limit (28-36 mph). Operation in these modes aligns with Class 3 capabilities or beyond and should be restricted to private property or areas where such speeds are legally permitted, as noted for “The OG” regarding its use in California. 

US Licensing, Age, and Access Regulations

While federal law provides a baseline definition, the actual use of e-bikes is governed by a set of state and local rules.

  • Federal Law: The Consumer Product Safety Commission (CPSC) defines a "low-speed electric bicycle" as a two- or three-wheeled vehicle with fully operable pedals, an electric motor of less than 750 watts (1 h.p.), and a maximum speed of 20 mph when powered solely by the motor while ridden by an operator weighing 170 pounds. This definition primarily regulates the manufacturing and sale of e-bikes, not their operation on roads or trails.
  • State Laws are Key: It is crucial for riders to understand that state laws dictate most operational rules for e-bikes, and these can vary significantly. As of July 2023, 38 states had adopted the three-class system or a variation thereof. This variability means a rider must be diligent in checking the specific rules for any state or locality they plan to ride in.
  • Licensing and Registration: In most states, Class 1 and Class 2 e-bikes are treated similarly to traditional bicycles and generally do not require a driver's license, registration, or specific e-bike insurance. However, there are exceptions; for example, Hawaii requires e-bike registration.
  • Age Restrictions: Minimum age requirements for operating an e-bike differ by state and often by e-bike class. Class 3 e-bikes frequently have a minimum rider age, commonly 16 or 17 years old. Some states impose general minimum age limits, such as 14 or 15, for any e-bike use. Some manufacturers may also recommend their own age restrictions; for example, Vulcan Bikes states its Breeze model is not to be operated by anyone under 18 years of age.
  • Helmet Laws: Helmet regulations for e-bike riders are inconsistent across states and are often linked to the rider's age and the e-bike's class. For instance, California mandates helmets for all Class 3 e-bike riders, regardless of age, and for any e-bike rider under 18 years old. Many other states require helmets for riders below a specific age, such as 16, 17, or 18. Given the increased speeds and potential risks, wearing a helmet is good practice, even when not legally required. See more about e-bike safety gear
  • Access and Where to Ride: The rules governing where different classes of e-bikes can be ridden—such as bike paths, multi-use trails, and roadways—are determined by state and local authorities. Class 3 e-bikes, due to their higher speeds, are often restricted from multi-use paths to ensure the safety of all users.

The higher speed capability of Class 3 e-bikes, for instance, directly correlates with the more stringent regulations often applied to them concerning age, helmet use, and access, reflecting a perceived increase in risk. Vulcan Bikes clearly indicates its models are factory-locked as Class 2, which is an important piece of information for regulatory compliance. However, users of the "Off-Road Mode" must be aware that this changes the bike's performance characteristics, potentially subjecting it to Class 3 or other motorized vehicle regulations depending on local laws. Riders should consult their state's Department of Motor Vehicles or local transportation authorities for the most current and specific e-bike laws. Resources such as People for Bikes can also offer guidance.