Colorado Revised Statutes Title 33. Parks and Wildlife § 33-15-110. Vehicles and vessels--operation on state property

(a) To operate or park a motor vehicle or vessel, except in designated areas where such operation or parking is authorized by the division;

(b) To operate a motor vehicle or vessel in excess of the posted speed limit;

(c) To park a motor vehicle or vessel in such a manner as to constitute or impede the normal flow of traffic or to leave a motor vehicle or vessel unattended for more than twenty-four hours. Any peace officer may order the removal or towing of any motor vehicle or vessel which is so parked, and such removal or towing shall be done at the expense of the owner and shall be in addition to any other penalty provided by law.

(d) To operate or park a motor vehicle without first purchasing the required valid passes or permits.

(2)(a) Any person who violates subsection (1)(a), (1)(b), or (1)(c) of this section commits a civil infraction and, upon conviction, shall be punished by a fine of one hundred dollars.

(b) Anyone who violates subsection (1)(d) of this section commits a petty offense and, upon conviction, shall be punished by a fine of one hundred dollars.