Traffic signs are mainly divided into four types: warning signs, prohibition signs, instruction signs, and guide signs. Warning signs are usually equilateral triangles with a yellow background and black borders, used to alert drivers to potential hazards ahead, such as sharp turns or pedestrian crossings. Prohibition signs are mostly circular or downward-pointing triangles, featuring a white background, red border, and black symbols, clearly prohibiting or restricting specific behaviors, such as no parking or speed limits. Instruction signs are primarily blue with white symbols, in shapes including circles or squares, used to direct vehicles and pedestrians to move in specified directions, such as straight-ahead or left-turn signs. The design and placement of these signs adhere to strict standards to ensure traffic order and safety, and drivers must understand their meanings to comply with regulations. Auxiliary signs, serving as supplementary information, are typically rectangular with white backgrounds and black text, placed below main signs, and cannot be used independently.
