Which sign color is NOT typically used for traffic control?

In the context of traffic control, the color brown is primarily utilized for representing recreational and cultural interest areas, such as parks, historical sites, and scenic routes. This distinction is essential because traffic control signs are typically associated with certain functions and messages that enhance road safety and navigation.

Red is widely recognized for stopping or prohibiting, seen on stop signs and regulation signs. White is used for regulatory signs, such as speed limits and other commands that drivers must follow. Blue provides information about services, such as rest areas or hospital facilities.

Since brown is not employed for conventional traffic control purposes, it stands out as the correct answer in this scenario. Recognizing the specific meanings associated with these color codes is vital for safe driving and adherence to traffic regulations.