What is an interchange?

Answer: B — The connection of a freeway to a road or another freeway by a series of ramps

An interchange refers to the connection point where a freeway meets another road or freeway. It is designed to facilitate the smooth flow of traffic through the use of a series of ramps that allow vehicles to transition from one roadway to another without the need for stop signs or traffic signals. This design minimizes potential conflicts and accidents that could occur if vehicles were to cross paths at a traditional intersection, providing a more efficient and safer way for drivers to navigate between different routes. Other options describe different features or types of roadways, but they do not capture the specific function and structure of an interchange, which plays a critical role in managing high volumes of traffic on major thoroughfares.