Suburban commuter railroad or commuter railway a passenger rail transport service between a city center, and outer suburbs and commuter towns or other locations that draw large numbers of commuters people who travel on a daily basis. Trains operate following a schedule, at speeds varying from 50 to 200 km/h (30 to 125 mph). Distance charges or zone pricing may be used. Common non-English names are Cercanías in Spanish, S-Bahn in German, and Elektrichka in Russian. The development of commuter rail services has become popular today, with the increased public awareness of congestion, dependence on fossil fuels, and other environmental issues, as well as the rising costs of owning, operating and parking automobiles.