A study found that signs placed in the Hartsfield-Jackson Atlanta International Airport to promote passengers walking to airport gates rather than taking shuttles resulted in several hundred more passengers a day choosing to walk (ceiling-mounted infrared sensors were used to count travelers entering and exiting the study location). The project was supported by Kresge and the Centers for Disease Control and Prevention.

The study also produced a guide, “Promoting Airport Walking,” intended primarily for airport managers who want their airports to encourage healthy habits and improve customer experiences.