The words parkway and driveway come from the days when only the well-off could afford an automobile.
The long, winding roads from the highway to the manor were, and are still, called “driveways.”
Driveways rarely have traffic lights, although some leading to commercial businesses and parks that have heavy traffic sometimes do.
On the other hand, to ensure the pleasure of driving, highways were built carefully, with planted trees and groomed medians to imitate the natural beauty of a park, so they were called “parkways,” meaning left in an enhanced natural state.
Why do we park on a driveway and drive on a parkway?