Can an off-duty police officer give you a ticket in California?
Yes, in California it is totally legal for an off-duty officer to issue you a citation. It will usually come in the mail or they will have a marked patrol unit pull you over. If s/he elects to have you pulled over by a marked patrol unit, then after the officer contacts you, the off duty officer will issue the ticket. Also, a police officer in California has “Police Powers” anywhere in the State of California. I know this because I am a police officer in California and have written several citations while “off duty”.