ELI5: Explain Like I'm 5

Controlled-access highway

A controlled-access highway is like a big fancy road where only certain people are allowed to drive. It's like having a secret password to get onto the road and once you're on, you can go really fast because there aren't too many stops. Only special cars like buses, trucks, and cars with more than one person inside are allowed on this road. It's a very important road because it helps people get where they need to go more quickly, and keeps them safe because there aren't any intersections or cross streets to worry about. It's like a super highway where everyone has to follow strict rules to stay safe and get where they need to go without any problems.