Subject to how other federal partners and state and local entities define “outdoors,” CDC understands “outdoors” to refer to any open-air area. Examples of outdoor areas of conveyances are the uncovered top decks of buses and open deck areas of ferries or other vessels. Examples of outdoor areas of transportation hubs include surface parking lots and partially enclosed parking garages, passenger pick-up/drop-off areas, railway platforms, piers, open hangars, and airport runways.