Colorado Revised Statutes Title 16. Criminal Proceedings § 16-3-312. Warrantless entry of a dwelling

(a) Wear and activate a body-worn camera as required by section 24-31-902(1)(a)(II)(A) when entering a premises for the purpose of enforcing the law; and

(b) Knock-and-announce the officer's presence at a volume loud enough for the officer to reasonably believe the occupants inside can hear, allow a reasonable amount of time before entering given the size of the dwelling for someone to get to the door, and delay entry if the officer has reason to believe that someone is approaching the dwelling's entrance with the intent of voluntarily allowing the officer to enter the dwelling; except that this subsection (1)(b) does not apply if the circumstances known to the officer at the time provide an objectively reasonable basis to believe that a no-knock entry or not waiting a reasonable amount of time is necessary because: