This part of GB 5768 specifies the general requirements for the classification, color, shape, character, size, graphics, etc. of road traffic signs, as well as the requirements for design, manufacture, installation, and construction. This part is applicable to the production, detection and installation of traffic signs on highways, urban roads and places that are within the jurisdiction of the unit but allow social motor vehicles, squares, public parking lots and other places used for public traffic. The traffic signs set up in places where other motor vehicles pass, parking lots, etc. can be implemented as a reference.