Other Urban Transit Systems This U.S. industry comprises establishments primarily engaged in operating local and suburban ground passenger transit systems (except mixed mode transit systems, commuter rail systems, and buses and other motor vehicles) over regular routes and on regular schedules within a metropolitan area and its adjacent nonurban areas. Commuter cable car systems (i.e., stand-alone) Commuter tramway systems (i.e., stand-alone) Commuter trolley systems (i.e., stand-alone) Light rail systems (i.e., stand-alone) Monorail transit systems (i.e., stand-alone) Subway systems (i.e., stand-alone)