Nimble tech solution eases pain of Melbourne tunnel closures
This is how they know how long your delay will be.
In an effort to minimise the pain felt by affected drivers, however, the roads department decided to trial BlipTrack, a Danish traffic measurement solution installed in Australia by Austraffic, to measure the extra time needed for the alternative route.
http://www.allnewsau.com/news/nimble-tech-solution-eases-pain-of-melbour...