http://netvouz.com/barrybrown61/tag/usdot?feed=rss barrybrown61's bookmarks tagged "usdot" on Netvouz http://www.visigraph.com/traffic-signs/reflective-traffic-control-sign-how-road-signs-and-posts-are-constructed/ If the sign is located on the Interstate Highway System, the USDOT works with the State DOT to determine how sign systems are constructed. The USDOT allows some variation in the way signs are posted. barrybrown61 Mon, 15 Apr 2013 10:15:30 GMT http://www.visigraph.com/guide/regulations-in-making-and-installing-traffic-signs/ In any state in the United States, you can’t install traffic signs without some sort of governmental permission, typically a local, state, or federal DOT. barrybrown61 Wed, 17 Feb 2016 02:49:53 GMT http://www.visigraph.com/signs/traffic-street-signs/ Traffic street signs include a huge variety of road markers in the US, and even more in the rest of the world. Click to read. barrybrown61 Thu, 14 Jul 2016 01:48:55 GMT