What is the primary purpose of highway and expressway guide signs?

The primary purpose of highway and expressway guide signs is to direct and inform drivers. These signs serve as crucial navigational aids that help motorists understand where they are, where they need to go, and how to reach their destinations. They typically display information such as exit numbers, road numbers, directions to destinations, upcoming services, and distances.

This role is essential for safe and efficient travel, as it allows drivers to make informed decisions when navigating roadways. By clearly conveying necessary navigational information, these signs help reduce confusion and enhance overall traffic flow.

While other options may seem like they provide helpful information to drivers, they do not capture the primary function of guide signs. For instance, providing scenic information or rules and regulations serves different purposes that do not align with the primary objective of guiding drivers on their routes. Advertising local services is also not the main intent of guide signage, as such advertisements are typically reserved for specific roadside billboards or signs.