What is the primary purpose of controlled access highways?

The primary purpose of controlled access highways is to facilitate through traffic without interruptions. These highways are designed with specific access points, such as ramps, which are strategically placed to minimize the interaction between high-speed traffic and local roadways. This design enhances safety and efficiency by reducing the number of intersections, stoplights, and other potential disruptions that can slow down the flow of vehicles.

In contrast, options like connecting rural areas or providing scenic routes focus on different aspects of road infrastructure that are not the primary aim of controlled access highways. While reducing tolls may benefit users, it does not reflect the essential function of such highways, which is to enable uninterrupted travel over long distances. By allowing for smoother traffic flow, controlled access highways play a crucial role in reducing travel time and improving overall transportation efficiency.