Traffic signs use common shapes and colors to convey important messages to road users. The meaning of these shapes and colors is standardized to ensure clear and consistent communication. For example, a triangular shape signifies a warning sign, alerting drivers to potential hazards ahead. Circular signs with a red border indicate prohibitions or restrictions, while regulatory signs have a white background with black symbols or text. Rectangular signs typically provide guidance or information to drivers. Colors play a vital role too, with red signaling stop or prohibition, yellow cautioning for warnings, and green indicating guidance or directional information. These standardized shapes and colors enable quick recognition and understanding of traffic signs, ensuring safety on the roads.