This Standard covers electrically powered, on-road, variable message signs used for traffic management and/or driver information applications. Part 1 of the Standard covers Fixed Signs, where the display is mounted in a permanent position above or adjacent to the roadway. Part 2 of the Standard covers Portable Signs, where the display is mounted and deployed on a relocatable trailer.
AS 4852.2:2009 history
2019AS 4852.2:2019 Variable message signs, Part 2: Portable signs