Added 26 May, 2013
The Sydney Harbour Tunnel in Australia has successfully developed and installed a radical new safety warning system that solves the persistent problem of drivers ignoring other more conventional signals to stop. The Softstop Barrier System produces a pseudo holographic image that appears to float in mid air, commanding the attention of the motorist making the 'STOP' message impossible to miss. The illusion of a solid surface that instantly blocks both southbound lanes of traffic. If an accident, fire, or major disaster should occur, it is imperative that traffic stops rather than drive into it, but allow emergency teams to pass through without incident.