What colors are regulatory traffic signs?

Regulatory traffic signs are primarily colored red, white, and black because these colors are specifically chosen to convey rules and regulations that drivers must follow. The red color is typically used for stop signs, yield signs, and other signs that indicate prohibitions or restrictions, capturing the driver's attention and communicating the need to stop or caution. White is commonly used for speed limit signs and informative regulatory signs, providing clarity and straightforward instructions. Black is often used for text and symbols on these signs, enhancing visibility and contrast. This combination effectively communicates important traffic regulations that are crucial for road safety and law enforcement, ensuring drivers understand what actions to take or avoid.