What are horizontal rectangular signs typically used for?

Horizontal rectangular signs are primarily used as guide signs. These signs provide essential information to drivers about directions, distances, and points of interest. For example, they can indicate route numbers, destinations, and advisory information such as mile markers. The shape and design of these signs are purposefully chosen to be easily readable and recognizable, helping drivers navigate effectively.

While warning signs, regulatory signs, and construction signs serve their specific functions, they typically adopt different shapes. For instance, warning signs are usually diamond-shaped, regulatory signs often have a vertical rectangular shape, and construction signs can be various shapes but commonly are diamond or rectangular in nature. Understanding these distinctions can help drivers interpret road signs more accurately and respond appropriately while on the road.