Electric micromobility — like e-bikes, e-scooters and e-skateboards — are an important part of Boulder’s transportation network, helping connect people to places and reduce greenhouse gas emissions.

Overview

The City of Boulder's transportation strategy sets out a roadmap for a future that is shared and electric to meet our transportation and climate goals.

Electric micromobility can help us get there.

Not all devices are the same. What you ride changes where you ride.

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Which Wheels Go Where

You are responsible for knowing where your device is allowed.

Use the guide below to know what you ride and where you ride.

*You may ride Class 1 and 2 e-bikes, e-scooters, e-skateboards and other lightweight electric vehicles on sidewalks adjacent to non-residential streets only if no bike lanes are present. You cannot ride on the sidewalk adjacent to streets with a speed limit of 20 mph or less. You cannot ride in dismount zones.
VEHICLE TYPE/CLASSSIDEWALKS*MULTI-USE
PATHS
STREETS &
BIKE LANES
Trails

Class 1 and 2 E-bike (max speed of 20 mph)

E-bike example
✔️*✔️✔️Yes, only on certain OSMP trails.

Class 3 E-bike (max speed of 28 mph)

E-bike example
✔️

Low-Power Scooter
(must be registered and insured)

low power scooter example

Streets: ✔️
Bike Lanes: ❌

Toy Vehicle

An example of a toy bike

Lightweight Electric Vehicle
(E-Scooter/E-Skateboard)

E-skateboard example
E-scooter example
✔️*✔️✔️

  1. What about "e-motos"?
    E-moto example
    E-moto example

    E-motos are not allowed on Boulder's transportation system. While the term "e-motos" is not currently defined in Boulder Revised Code, you can think of them as Toy Vehicles depending on the size of motor, watt output and other specifications. View definitions.

Remember: two wheels and electric power don’t equal an e-bike.

Feature Class 1, 2 or 3
Electric Bicycle
E-Moto
Operable Pedals Required Not required (often unoperable)
Motor Power ≤ 750W > 750W (some models up to 6,000W)
Top Speed ≤ 20-28 mph 30-65+ mph
Throttle Class 2 only (≤ 20 mph) Usually throttle only
Licensing/Registration No Required
Product Category Consumer Product Motor Vehicle (requires license, registration, insurance)
Street Legal for Minors
  • All ages can operate a Class 1 and 2 e-bike.
  • Ages 16+ can operate a Class 3 e-bike, on streets and bike lanes only.
    Riders ages 16 and 17 must wear a helmet when riding as the passenger or driver.
No, unless the device is registered, licensed,
and insured, and the rider meets
minimum age requirements.

All riders must:

Always yield to pedestrians and slower-moving traffic.

However you roll, please consider your neighbors and Share the Path.

Use an audible signal before passing on the left

  • Before you pass, always use an audible signal like a bike bell or by loudly saying, “passing on your left.”
  • Always pass at a slow speed to ensure courtesy, etiquette and safety.

Equip their device with lights if riding at night.

A white light in front and a red light on the back.

Except for accessibility purposes, must dismount in Dismount Zones

Must follow speed limits

  • Multi-use path: 15 mph
  • Crosswalks: 8 mph
  • Residential streets: 20 mph
Graphic of speed limits. Multi-use paths are 15 MPH, crosswalks are 8 MPH, and Streets are 20 MPH unless otherwise posted.

Follow the rules of the road

When riding on roads and bike lanes, remember:

  1. You must ride close to the right side of the road or bike lane, except if it is unsafe, when making a left turn, and when passing a slower vehicle.

    Ride single file. Only ride side-by-side with no more than one other person, if safe to do so and if you're not disrupting the flow of traffic.

  2. Signal your intention to turn or stop.

    Ride predictably.

    Bike hand signals
    Bike hand signals example; courtesy of CDOT. 
  3. Obey speed limits and other road signs.

    People on e-bikes and bikes who are 16 or older can use Colorado’s Safety Stop as long as they do not take the right of way from another road user. If it is your right of way, you may treat stop signs as yield signs, and red lights like stop signs, and stop signs like yield signs.

FAQ

Micromobility, such as bikes, scooters and skateboards, is a wheeled type of transportation that is:

  • Low speed

  • Operated by a single person

  • Meant for travel over a short distance

  • Privately owned or available as shared, rental vehicles

E-micromobility, or electric micromobility, is a type of micromobility that is also:

  • Powered by electricity

  • Does not have an internal combustion engine

  • Does not travel over 20 mph

Examples include e-bikes, e-scooters and e-skateboards.

Manufacturers will often describe devices as Class 1-3 e-bikes due to their ability to toggle between power settings.

Because these devices can speed more than 20+ miles per hour, their use is more restricted than Class 1 and 2 e-bikes.

Read the regulations below to know if your device is defined in the Boulder Revised Code as a Class 3 e-bike, Low-Power Scooter or other device.

Following the completion of a community engagement process, visitors are now allowed to ride Class 1 and Class 2 electric bikes on certain open space trails. View a map of specific trails for Class 1 and 2 e-bikes.

Read our guide to learn more about the types of e-bikes allowed on Open Space and Mountain Parks trails and where you can ride them:

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Definitions

For full Electric Mobility Device Definitions per the Boulder Revised Code, view the City of Boulder Municipal Code. Some laws are also under the state's jurisdiction, which you can view on the Colorado Revised Statutes.

E-bike example
Class 1, 2 and 3 e-bikes look similar but
​​​​​differ in speed and more
​​​​​

Electric assisted bicycle means a vehicle having:

  • two tandem wheels or two parallel wheels and one forward wheel;
  • fully operable pedals;
  • and an electric motor not exceeding 750 watts of power rating.

The State of Colorado recognizes three classes of electric-assisted bicycles:

  • Class 1 E-bike: Equipped with a motor that provides assistance only when the rider is pedaling and that ceases to provide assistance when the bicycle reaches a speed of 20 miles per hour.
  • Class 2 E-bike: Equipped with a motor that provides assistance regardless of whether the rider is pedaling but ceases to provide assistance when the bicycle reaches a speed of 20 miles per hour.
  • Class 3 E-bike: Equipped with a motor that provides assistance only when the rider is pedaling and that ceases to provide assistance when the bicycle reaches a speed of 28 miles per hour.​

The City of Boulder permits class 1 and class 2 e-bikes on sidewalks (except in dismount zones), multi-use paths, bike lanes and streets. Class 3 e-bikes are permitted only on streets and in bike lanes.

Examples of e-bike types. The standard e-bike has a shorter frame with a rack for goods. The e-cargo bike has a much longer frame with a wagon for children or goods in the front.

low power scooter example
Low-power scooter example

Low-power scooter means a self-propelled vehicle designed primarily for use on the roadways with

  • not more than three wheels in contact with the ground;
  • no manual clutch;
  • and either of the following:
    • (1) A cylinder capacity not exceeding fifty cubic centimeters if powered by internal combustion; or
    • (2) A wattage not exceeding four thousand four hundred seventy-six if powered by electricity.

Low-power scooter does not include a toy vehicle, bicycle, electric assisted bicycle, electric scooter, or any device designed to assist people with mobility impairments who use pedestrian rights-of-way.

E-skateboard example
E-skateboard example

Lightweight electric vehicle means any device capable of moving itself, or of being moved, from place to place upon wheels that is

  • powered by a battery; and
  • weighing less than fifty pounds, including by way of example but not limitation an
    • electric scooter;
    • electric skateboard;
    • electric unicycle; and
    • self-balancing single-wheel electric personal transport board.

Lightweight electric vehicle shall not include a toy vehicle.

E-scooter example
Personal e-scooter example 

Low-speed electric vehicle means a vehicle that is self-propelled utilizing electricity as its primary propulsion method:

  • Has at least three wheels in contact with the ground
  • Does not use handlebars to steer
  • Exhibits the manufacturer's compliance with 49 C.F.R. 565 or displays a seventeen-character vehicle identification number as provided in 49 C.F.R. 565
  • Whose maximum speed is not greater than 25 mph

Such vehicles are motor vehicles and are authorized to operate upon the streets of the city subject to the provisions of the Boulder traffic code.

An example of a toy bike
An example of a toy bike

Toy vehicle means any vehicle that has wheels and is not designed for use on streets or for off-road use.

Includes, but is not limited to, gas-powered or electric-powered vehicles commonly known as mini-bikes, "pocket" bikes, and kamikaze boards.

Toy vehicle does not include lightweight electric vehicles, off-highway vehicles, or snowmobiles.

Toy vehicles are not permitted anywhere on the city's public transportation network.

An Off-Highway Vehicle (OHV), C.R.S. 42-6-102 (11.5), is defined as:

A self-propelled vehicle that is:

  • Designed to travel on wheels or tracks in contact with the ground.
  • Designed primarily for use off of the public highways and generally and commonly used to transport persons for recreational purposes.
  • Off-highway vehicles include vehicles commonly known as all-terrain vehicles, snowmobiles and surplus military vehicles.

Off-highway vehicles do not include:

  • Toy vehicles (any vehicle with wheels and is not designed for use on the public highways or for off-road use)
  • Vehicles designed and used primarily for travel on, over, or in the water
  • Historical military vehicles
  • Golf carts or golf cars
  • Vehicles designed and used to carry persons with disabilities
  • Vehicles designed and used specifically for agricultural, logging, or mining purposes

E-moto example
E-moto example

While Boulder Revised Code does not categorize e-motos, e-motos may be classified as low-power scooters, toy vehicles, or off-highway vehicles (OHV) depending on size of motor, watt output, and other specifications.

They are not considered e-bikes.