For a week, take note of the bus shelters around you. Notice the comings and goings of passengers and what they do while they wait for the next bus.
Also, notice the bus personnel as they keep shelters clean and tidy for people to use. Except that you won’t see any; there are no daily custodians to clean bus shelters in Arlington County. Instead, there is a system for volunteers to adopt an ART bus stop near their location.