A highway exit is a point on a highway where drivers can leave the road and enter another road or access a service. The most common type of highway exit is a RAMP, which is a curved section of road that allows drivers to transition from one road to another. An INTERCHANGE is a more complex type of highway exit, which involves two or more roads intersecting at different levels. A TURNOUT is a less common type of highway exit, which is a short section of road that allows drivers to turn off the main highway and onto a side road.