What color are regulatory signs typically?

Regulatory signs are crucial for maintaining order and safety on the road, and they are typically white with red markings. This color scheme is designed to ensure high visibility and instant recognition by drivers. The use of white indicates that these signs provide necessary information that must be followed, such as speed limits, stop signs, yield signs, and do not enter signs.

The red elements of these signs serve as a warning or directive that must be adhered to, highlighting the importance of complying with the regulations they impose. The distinct color combination of white and red allows these signs to stand out against the backdrop of the road and other surroundings, making it easier for drivers to identify critical information quickly.

In contrast, the other color combinations mentioned, such as yellow and green, might relate to warning signs or informational signs but do not signify the regulatory nature that white and red do. Green is generally associated with directional guide signs, while purple does not have a standard meaning in road signage.