Description 50kph Speed Limit Sign  Prohibition signs are essential for maintaining safety, order, and compliance with regulations in various settings, from workplaces and public spaces to private properties and transportation systems. Safety signs available standard in either of the below materials: ACM, 4mm Aluminum composite panel with pre-drill corner holes for easy fixing. SAV, self-adhesive vinyl heavy duty outdoor / indoor vinyl pre-cut for easy application. Other materials available on request: Reflective 2mm aluminum sheet Whiteboard laminate Core flute Magnetic