Keywords
america, appearance, chicago, chicago transit authority, commute, cta, cta train, day, horizontal, illinois, infrastructure, locomotive, modern, photography, platform, rail, railroad, railway, station, subway, subway system, track, train, transport, travel, underground, united states of america, urban, way, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u16072668