![Traffic signal operation in Los Angeles dates back to 1924, when the city operated 31 Acme traffic signals from a central station - “the first known traffic control center in the world,” writes city official John Fisher in a retrospective of the ATSAC system [PDF] in the July 2011 issue of the I.T.E. Journal, a publication of the Institute of Transportation Engineers. That system soon became obsolete, as did another that came along in 1960 (below), found in this slideshow on ATSAC created by Fisher: (via The Oz of Los Angeles Traffic Lights - Commute - The Atlantic Cities)](http://25.media.tumblr.com/tumblr_lyzkli4dS31qz4urko1_500.jpg "Traffic signal operation in Los Angeles dates back to 1924, when the city operated 31 Acme traffic signals from a central station - “the first known traffic control center in the world,” writes city official John Fisher in a retrospective of the ATSAC system [PDF] in the July 2011 issue of the I.T.E. Journal, a publication of the Institute of Transportation Engineers. That system soon became obsolete, as did another that came along in 1960 (below), found in this slideshow on ATSAC created by Fisher: (via The Oz of Los Angeles Traffic Lights - Commute - The Atlantic Cities)")
Traffic signal operation in Los Angeles dates back to 1924, when the city operated 31 Acme traffic signals from a central station - “the first known traffic control center in the world,” writes city official John Fisher in a retrospective of the ATSAC system [PDF] in the July 2011 issue of the I.T.E. Journal, a publication of the Institute of Transportation Engineers. That system soon became obsolete, as did another that came along in 1960 (below), found in this slideshow on ATSAC created by Fisher: (via The Oz of Los Angeles Traffic Lights - Commute - The Atlantic Cities)
