Final answer:
Regulatory signs are black, white, and sometimes have additional colors such as red or blue. They provide instructions and establish rules for traffic control.
Step-by-step explanation:
Traffic signs are used to convey important information and regulations to drivers on the road. Regulatory signs, in particular, are designed to give instructions and establish rules for traffic control. They are generally black and white, and sometimes have additional colors such as red, yellow, or blue.
For example, regulatory signs that indicate a stop are octagonal in shape and have the colors red and white. Signs that indicate a speed limit are rectangular in shape and are typically black and white, with the speed limit number in black on a white background.
It is important for drivers to understand the meaning of these signs, as they play a crucial role in maintaining traffic safety and order.