NO more traffic lights

Traffic lights? Naaa! Projected Pedestrians Are Traffic Stoppers

South-Korean product designer Hanyoung Lee has come up with a safety device that could make traffic lights obsolete, or at least improve their effectiveness. His Virtual Wall is designed for busy city streets. Instead of showing a red light when it's time for pedestrians to cross the street, Lee's Wall projects a curtain-like, two-dimensional image of giant people crossing the street. The real pedestrians walk behind their virtual counterparts. Lee's design, works thanks to a stack of laser projectors installed in poles on opposites sides of the street

Besides halting traffic at intersections, the projected images could be used to direct crowds at large events or form temporary virtual fences to warn motorists that road construction crews are working nearby. And how about smart deer crossing walls, that can both detect and project oncoming deer?