Editing Enhanced 911 (section)

==Address signage standards==
In addition to upgrading communications systems, some counties and communities in the United States have established ordinances (e.g. IRC section [https://web.archive.org/web/20160304053121/http://publicecodes.cyberregs.com/icod/irc/2012/icod_irc_2012_3_par250.htm R319.1]) requiring property owners to standardize the display of house numbers on buildings and along streets and roadways, to allow emergency personnel to more easily identify a given address day or night, even in poor weather. These are normally composed of reflective characters, at least 3 to 6&nbsp;inches high, on a contrasting reflective background. It is necessary for the address number to be affixed to the building or to a separate structure such as a post, wall, fence, or mailbox, provided that such separate structure is located in front of the building and on the building's side of the street. Compliant signage systems are often advertised as being "E911 compliant".{{Citation needed|date=October 2007}}