Colorado E-bike and Bicycle Laws
Colorado HB25-1197, in force since August 6, 2025. Classes, licensing, helmets, where you can ride, and the bicycle rules that apply to every rider. Reviewed October 2026.
The Short Version
Colorado treats e-bikes as bicycles, hands buyers a $225 discount at the register, and asks for no license, registration, or insurance. The three-class framework comes from Colorado HB17-1151; Colorado HB25-1197 added battery certification, an out-of-class exclusion, and a false-labeling ban in 2025.
The Three E-bike Classes in Colorado
Class 1
Assist only while pedaling, stopping at 20 mph (CRS 42-1-102).
Class 2
Assist whether or not you pedal, stopping at 20 mph.
Class 3
Pedal assist only to 28 mph; no speedometer requirement in the statute.
What Colorado Requires of E-bike Riders
Driver license
Not requiredE-bikes are carved out of the motor vehicle definition (CRS 42-1-102).
Registration
Not requiredNo plates for a 750-watt, three-class e-bike.
Insurance
Not requiredMandatory auto insurance stops short of e-bikes; the choice is yours.
Minimum age
16 for Class 3Under-16s may not operate a Class 3 but may ride as passengers (CRS 42-4-1412); no floor for Class 1 or Class 2.
Helmet
Under 18 on Class 3Class 3 operators and passengers under 18 wear a CPSC- or ASTM-certified helmet (CRS 42-4-1412); no statewide rule for Class 1 or Class 2.
January 1, 2027: Class Labels on Every New E-bike
The second phase of Colorado HB25-1197 requires new e-bikes to be labeled with the highest class, or every class, they can run in, and a multi-mode e-bike must satisfy the rules of each class it offers. On October 12, 2026 the Colorado Attorney General issued a public advisory warning buyers about high-powered machines sold as e-bikes.
Where You Can Ride an E-bike in Colorado
- Roads & bike lanes: allowed
Full bicycle rights and duties for all three classes (CRS 42-4-1412).
- Bike & pedestrian paths: allowed
Class 1 and Class 2 go wherever bicycles are authorized, with local opt-out; Class 3 only where the path runs within a street or the local authority allows it.
- Sidewalks: allowed
Allowed with pedestrian duties unless a local ordinance says no; Denver and several other cities do (CRS 42-4-1412).
- State parks: allowed
Colorado Parks and Wildlife opens multi-use trails to Class 1 and Class 2; Class 3 stays on park roads and bike lanes.
- Out-of-class & mislabeled e-bikes: not allowed
A bike built to be switched past its class limits is not an e-bike under Colorado HB25-1197, and labeling it as one is a deceptive trade practice.
Colorado Bicycle Rules for Every Rider
Colorado regulates bicycles under CRS 42-4-1412 and pairs a 3-foot passing law with the Colorado Safety Stop. These rules apply to every bicycle; e-bikes add the class conditions above.
Helmets
Colorado has no statewide helmet law for bicycles, Class 1, or Class 2 e-bikes. Class 3 operators and passengers under 18 must wear one (CRS 42-4-1412).
Passing distance
A driver passing a cyclist must leave at least 3 feet and may cross a double yellow line to make room when it is safe (CRS 42-4-1003, in force since 2009).
Lights at night
From sunset to sunrise a bicycle needs a white front lamp visible from 500 feet and a red rear reflector visible from 600 feet; a red rear lamp may be used in addition (CRS 42-4-221).
Sidewalks
Sidewalk riding is allowed with pedestrian duties unless a local ordinance prohibits it (CRS 42-4-1412). Denver and several other cities do, so check before you roll onto one.
Stop signs and signals
The Colorado Safety Stop (CRS 42-4-1412.5, statewide since 2022) lets riders 15 and older, and younger riders with an adult, slow and treat a stop sign as a yield sign, and stop and treat a red light as a stop sign when the way is clear. Local authorities may opt out, so posted signs win.
Lane position
Ride as far right as practicable except when passing, turning left, avoiding hazards, or in a lane too narrow to share (CRS 42-4-1412). Two abreast is allowed where it does not impede traffic.
Statutes: CRS 42-1-102(28.5), 42-1-102(58), 42-4-1412. E-bike data reviewed October 2026; bicycle rules reviewed October 2026. This page is a summary, not legal advice; local ordinances can add rules of their own.