CA AB931

Requires peace officers to attempt deescalation using time, distance, communications, and available resources whenever safe, feasible, and reasonable, effective January 1, 2020.

Limits use of deadly force by peace officers to situations necessary to defend against imminent death or serious bodily injury to the officer or another person.

Prohibits use of deadly force against individuals who pose a risk only to themselves unless they pose an imminent threat of death or serious bodily injury to others or officers.

Restricts deadly force against fleeing persons to cases where the officer has probable cause the person committed or intends to commit a felony involving death or serious bodily injury, and there is a threat of imminent death or serious bodily injury if the person is not immediately apprehended.

Defines key terms including "necessary," "reasonable alternatives," and "threat of imminent death or serious bodily injury" based on what a reasonable officer in the same situation would conclude from totality of circumstances known at the time.