All moped riders (including Class 3 equivalent e-Bike riders) under the age of 18 are required to wear a helmet. Helmet use is strongly recommended for all electric bicycle riders regardless of age.
Montana E-Bike Laws and Regulations (2026)
Written by: Kazim Ladimeji | June 30, 2026 | Time to read 6 min
As a resident or visitor in Montana, it's important to understand the state's electric bike laws. From sidewalk riding and helmet requirements to moped classifications and trail access, these regulations directly affect where and how you can legally ride your e-Bike.
More about the Author: Kazim Ladimeji
Kazim is a UK-based cyclist and writer who discovered his passion for riding during lockdown six years ago and hasn’t looked back since. He now rides around 100 miles a week, exploring road and light gravel routes from his base in the Cotswolds, a cycling paradise. When he’s not riding or writing about e-Bike trails in the US, he’s exploring cafés, cooking, and keeping busy as a soccer dad
Montana takes a different approach to electric bicycle regulation than many states. Rather than adopting the three-class e-Bike system, Montana distinguishes between electric-assisted bicycles and mopeds, with different rules applying depending on the vehicle's speed and performance.
In general, lower-powered electric bicycles are treated much like standard pedal bikes, while faster Class 3-style e-Bikes may fall under Montana's moped classification and face additional regulation.
In this article, I will summarize the key Montana e-Bike laws in a practical, easy-to-understand way so you can stay compliant and ride safely.
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Table of Contents
What is an e-Bike in the state of Montana?
What are the electric bike laws in Montana in 2026?
Do I need a license or registration to ride an e-Bike in Montana?
Where can I ride my electric bicycle in Montana?What are Montana's rules on bicycle lights and other equipment on electric bicycles?
Frequently Asked Questions
What is an e-Bike in the state of Montana?
Montana has not adopted the three-class system for classifying electric bicycles and has developed its own classification system and definition of an electric bike as follows:
Under this code, electric-assisted bicycles are defined as:
A vehicle on which a person may ride that has two tandem wheels and an electric motor capable of propelling the vehicle and a rider who weighs 170 pounds and cannot travel at a speed exceeding 20 mph on a paved, level surface. These are effectively Class 1 and 2 e-Bikes under the three-class system.
Mopeds (Class 3 Equivalent e-Bikes)
Under this code, legal mopeds meet the following criteria:
- Can be a motor-driven cycle equipped with two or three wheels
- The power source shall be capable of propelling the vehicle, unassisted, at a speed not to exceed 30 miles per hour on a level road surface
- Must have foot pedals to allow muscular propulsion
- Power source must provide a maximum of 2 brake horsepower
- Does not have a clutch or shifter when the drive is engaged
It's my interpretation that Class 3 e-Bikes would be classified as mopeds and not electric bicycles in Montana due to their 28 mph top speed capability.
What are the electric bike laws in Montana in 2026?
Under Title 61 Chapter 8 of the Montana Vehicle Code, electric-assisted bicycles (Class 1 and Class 2 equivalent) are treated the same as normal bicycles.
Mopeds (including Class 3 equivalent e-Bikes) are not electric bicycles and therefore are not treated as bicycles under the Montana Code.
Do I need a license or registration to ride an e-Bike in Montana?
No. In Montana, electric-assisted bicycles are treated like normal bicycles, and therefore, e-Bike operators do not need a driver's license, vehicle registration, or liability insurance.
Class 3 bikes, which may fall under the classification of mopeds, do not require registration if they have operable pedals but may require an operator's licesce. This remains a grey area, so I recommend checking with the Montana Department of Motor Vehicles.
Where can I ride my electric bicycle in New Jersey?
Bicycles and electric bicycles are legally classified as vehicles in Montana, meaning that general traffic law applies to their operation.
Electric bicycles (Class 1 and Class 2 equivalent) are classified as normal bicycles in Montana and can generally be ridden on highways, roadways, bicycle lanes, and bike paths.
Class III e-Bikes (classified as mopeds in Montana) face greater restrictions, and riders should check local signage before riding on bicycle paths, sidewalks, and trails.
Sidewalks
Montana legislature allows bicycles, electric bicycles, mopeds (Class 3 equivalent e-Bikes), and motorized scooters on sidewalks.
However, Class 3 e-Bikes falling under the category of mopeds must be ridden using human propulsion only when on a sidewalk. This means pedal assist is acceptable, but riders of throttle-equipped multi-mode bikes should not use throttle assist on sidewalks.
While Montana safety regulations do not prohibit this, it is typical to see sidewalk riding restrictions in pedestrian-heavy municipal business districts and after dark. For example, the City of Billings and the City of Missoula both prohibit riding on sidewalks in business districts.
As a matter of good practice, electric bicycle riders are expected to yield to pedestrians when on sidewalks and give a suitable warning signal at a safe distance before overtaking. From my experience, sidewalk riding is heavily restricted across the US, especially in downtown areas, so always check local signage before attempting to ride on sidewalks in Montana.
Montana Department of Natural Resources and Conservation
Normal bicycles enjoy greater public access and are generally allowed on Montana State Park trust land trails, roads, and off-road routes, and natural surface trails. Electric bicycles and mopeds are classified as motorized vehicles and can be ridden on federal, state, or dedicated county roads signed as open by the DNRC.
The Montana Department of Natural Resources has a selection of Off-Highway Vehicle / OHV trails on federal and public land, which can be used by motorized vehicles and electric mountain bikes.
Check out the Montana Fish, Wildlife & Parks website for more details on OHV trails suitable for electric mountain biking in wildlife habitat areas. Ensure you follow local trail etiquette established by local land managers, especially when travelling through the wildlife habitat areas of Wild Montana.
What are Montana's rules on bicycle lights and brakes?
The Montana regulatory framework requires bicycles, electric bikes, and mopeds ridden at night to have the following equipment:
- A white front headlight (visible from 500 feet to the front) is fixed to the bike or helmet.
- A red rear light or red rear reflector (visible from 500 feet to the rear when illuminated)
- Reflective material large enough and reflective enough to be seen from the sides of the bike from 500 feet when illuminated by low-beam headlamps
- Working brakes that enable the operator to stop the vehicle within 25 feet from a speed of 10 miles per hour on dry, clean pavement
Frequently Asked Questions
What are the rules around bicycle helmets in Montana?
Can I ride my electric bike on sidewalks in Montana?
Possibly. Montana generally allows bicycles and electric bicycles on sidewalks, although many municipalities prohibit riding in business districts and other busy pedestrian areas. Always check local signage before riding.
Do I need a driver's licence for an electric bike in Montana?
Not for electric-assisted bicycles that meet Montana's definition. However, higher-powered bikes that fall into the moped category may require an operator's licence.
Key Takeaways
- Montana does not use the standard three-class e-Bike system.
- Electric-assisted bicycles are limited to 20 mph and are treated like traditional bicycles.
- Faster Class 3-style e-Bikes may be classified as mopeds under Montana law.
