The wiki is WRONG. Colorado does require insurance on ALL registered vehicles and scooters are registered with the Colorado Dept of Revenue, even 50cc.

CRS 42-3-144 Motorized bicycle registration

“This states every motorized bicycle sold in this state shall have an identification number stamped on its frame which shall be recorded upon registration. Motorized bicycles shall be registered with the Department of Revenue, and such registration shall be evidenced by a decal which is securely affixed to the motorized bicycle frame in a conspicuous place. Registration shall be valid for a period of three years, and the fee for such registration shall be five dollars.”

CRS 42-4-1409 Compulsory Insurance for Vehicles

(1) “No owner of a motor vehicle required to be registered in this state shall operate the vehicle or permit it to be operated on the public highways of this state when the owner has failed to have a complying policy or certificate of self-insurance in full force and effect as required by sections 10-4-705 and 10-4-716, CRS.”

CRS 42-1-102(112) the description of a “Vehicle” is as follows:

“Vehicle” means any device which is capable of moving itself, or of being moved, from place to place upon wheels or endless tracks. “Vehicle” includes any bicycle, but such term does not include any wheelchair as defined by subsection (113) of this section, or any off-highway vehicle…”

Bicycles, not motorized; no registration, no insurance. Motorized bicycle, requires registration AND insurance.

BEWARE ANY AND ALL FREE LEGAL ADVICE, EVEN THE ABOVE, THAT DOES NOT SITE STATUTES. CHEERS!