Colorado Revised Statutes Title 33. Parks and Wildlife § 33-14-114. Required equipment--snowmobiles

(a) While being operated between the hours of sunset and sunrise, at least one lighted head lamp and one lighted tail lamp, each of a minimum candlepower as prescribed by regulation of the division;

(b) Brakes and a muffler which conform to the standards prescribed by regulation of the division, which shall be applicable in all cases, except for snowmobiles being operated in organized races or similar competitive events held on private lands with the permission of the owner, lessee, or custodian of the land, on public lands and waters under the jurisdiction of the division with its permission, or on other public lands with the consent of the public agency owning the land.