Thornton, CO Mobility & Curb Rules: E-Bike Classes (2026)
Key Facts
- Governing section
- Thornton City Code § 38-641
- Motor power cap
- 750 watts, 20 mph top motor-powered speed
- Pedaled e-bikes
- Allowed on bike/pedestrian paths at or under 20 mph
- Non-pedaled e-bikes
- Barred from bike/pedestrian paths
- Child exception
- E-balance bikes for riders age 6 and under
- Intersection rule
- § 38-492: stop/yield, 15 mph reasonable speed
Summary
Thornton Code Section 38-641 defines an electrical assisted bicycle as pedal-equipped, under 750 watts, capped at 20 mph motor power, and sets where it may ride: pedaled e-bikes are approved for bike and pedestrian paths at or under 20 mph, while non-pedaled models are barred from those paths except e-balance bikes for children six and under.
Electrical assisted bicycle means a vehicle having two tandem wheels or two parallel wheels and one forward wheel, fully operable pedals, an electric motor not exceeding 750 watts of power, and a top motor-powered speed of 20 miles per hour and shall comply with all applicable equipment requirements of Article 4, Part 2, of Title 42, and bicycle operational requirements of C.R.S. 42-4-1412, subject to the permissible uses of power-driven mobility devices by individuals with mobility disabilities found in TCC 46-44(a). (a)Any electric assisted bicycle that has operable pedals is approved for use on any bike path or pedestrian path and limited to operating at or under 20 miles per hour and bicycle operational requirements of C.R.S. 42-4-1412.(b)Any electric assisted bicycle that does not have operable pedals may not be used on any bike path or pedestrian path except an e-balance bike for children six years of age or younger.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 65).
Full Breakdown
S. 42-4-1412. Subsection (a) approves any electrical assisted bicycle with operable pedals for use on bike paths or pedestrian paths, capped at 20 mph, subject to the same state operational requirements. Subsection (b) flips that for bicycles without operable pedals, generally throttle-only devices: they may not be used on any bike or pedestrian path, with a single carve-out for e-balance bikes ridden by children six years of age or younger. Section 38-492 separately governs how any bicycle or electrical assisted bicycle must slow, stop, and yield when approaching a stop sign or red signal at an intersection, treating a reasonable speed there as 15 mph or less. Riders who violate either section face the general traffic penalty in Section 1-8 of the code.
Violations & Fines
Section 38-492(f) sets the penalty for violating the intersection rules governing bicycles and electrical assisted bicycles at whatever is provided in Section 1-8 of the Thornton City Code, the general municipal penalty schedule. Riding a non-pedaled electrical assisted bicycle on a bike or pedestrian path in violation of Section 38-641(b) is likewise enforceable as a code violation under the same general penalty framework.
Frequently Asked Questions
Does Thornton use Colorado's Class 1, 2, 3 e-bike system?
Can I ride a throttle-only e-bike on a Thornton bike path?
What speed must I ride at a Thornton intersection on an e-bike?
Sources & Official References
Other rules in Thornton
Compare Thornton to another location·View the Colorado mobility & curb rules overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.