What is a slip road?

A slip road is a connecting roadway designed to facilitate the smooth merging and diverging of traffic, particularly at intersections and between main roads, highways, or freeways. By allowing vehicles to enter or exit a main roadway without disrupting the flow of traffic, slip roads help to enhance safety and improve traffic efficiency. They serve as designated areas where vehicles can turn off or join the main road seamlessly, making it easier for drivers to navigate urban and highway systems.

In this context, other choices do not accurately capture the essence of a slip road. The features of heavy vehicle roads or traffic lanes for emergency vehicles pertain to different aspects of road design and usage. Additionally, rest areas are designated stops along highways for drivers to take breaks, which is a separate function from the purpose of a slip road. Understanding the role of slip roads emphasizes their importance in traffic management and safety on the roads.