blind-crossing / zebra lines for blinds

how the blind to go across the street safely and efficiently? This is a new blind sidewalks system based on elevating gear which is controlled by traffic light, to help the blind cross the street safely and straightly but also not affects normal traffic states. We call this solution “liftable blind cross system”. The power of elevating gear is supplied by rolling and scrunching of vehicle’s tire. The roughness of liftable blind cross system will lift convex surface to help the blind cross the street straightly and also have a separation of blind path from major pedestrian movement when traffic signal is red, and will be restored to flat for v