C.R.S. § 42-4-1008.5
42-4-1008.5. Crowding or threatening bicyclist
42-4-1008.5. Crowding or threatening bicyclist. (1) The driver of a motor vehicle shall not, in a careless and imprudent manner, drive the vehicle unnecessarily close to, toward, or near a bicyclist.
(2) Any person who violates subsection (1) of this section commits careless driving as described in section 42-4-1402.