Code 3 (TV series)

Code 3 is an American crime drama that aired in syndication in 1957. The stories were all based on actual files of the Los Angeles sheriff's office.
Stories were presented from the viewpoint of Assistant Sheriff George Barnett. At the end of each episode, Eugene W. Biscailuz, "the actual sheriff of Los Angeles County," summarized the segment.
Title.
The title is an "emergency signal alerting officers to proceed to the destination with red light and siren and with all possible haste."