Ten-code: Difference between revisions

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'''Ten-codes''', officially known as '''ten signals''', are [[brevity code|brevity what does 10-4 mean code]]s used to represent common phrases in voice communication, particularly by US public safety officials and in [[Citizens band radio|citizens band]] (CB) radio transmissions. The police version of ten-codes is officially known as the '''APCO Project 14 Aural Brevity Code.'''<ref>{{Cite web|url=http://28011b0082f55a9e1ec0-aecfa82ae628504f4b1d229bd9030ae1.r13.cf1.rackcdn.com/1975-10-017.200.pdf|title=APCO Brevity Code to be "Voluntary Standard" In Florida Communications Plan|date=October 1975|website=rackcdn.com|access-date=July 1, 2019}}</ref>

The codes, developed during 1937–1940 and expanded in 1974 by the [[Association of Public-Safety Communications Officials-International]] (APCO), allow brevity and standardization of message traffic. They have historically been widely used by law enforcement officers in [[North America]], but in 2006, due to the lack of standardization, the U.S. federal government recommended they be discontinued in favor of everyday language.<ref name="plain">{{cite web |url=https://www.npr.org/templates/transcript/transcript.php?storyId=113738105 |title=Plain Talk Eases Police Radio Codes Off The Air |author=Heard on Morning Edition |date=2009-10-13 |publisher=NPR |archive-url=https://web.archive.org/web/20091017193802/http://www.npr.org/templates/transcript/transcript.php?storyId=113738105 |archive-date=2009-10-17 |url-status=live |access-date=2010-01-23 }}</ref>