GB 5768.2-2022 "Road Traffic Signs and Markings, Part 2: Road Traffic Signs" is the core standard for the setting and use of road traffic signs in our country. It stipulates the basic requirements of road traffic signs such as classification, shape, Color, characters, graphics, etc., and clarifies the technical parameters such as the setting principle, position, size and reflective performance of various signs. It is suitable for the design, production and installation of traffic signs on highways, urban roads and related places. The standard provides an important technical basis for standardizing traffic order and ensuring road safety and smooth flow, and plays a key guiding role in improving traffic management efficiency and travel safety.