EntityQ1779202· pop 18· linked from 320 articlesautomatic block signalingSign in to saverailroad communications systemConnectionsrailway signalEntitylever frameEntityInternational Standard Book NumberEntityGeneral ElectricCompanylevel crossingEntityrailroad switchEntityAlstomEntityInternational Union of RailwaysEntityJim ThorpeEntityEuropean Union Agency for RailwaysEntitypassing loopEntityrailway signalling systemEntityHyundai RotemCompanyEuropean Train Control SystemEntitysignalling controlEntitySiemens MobilityCompanyAdtranzCompanypublic transport timetableEntityCSX TransportationEntitydouble-track railwayEntityCategories1871 establishments in the United States1871 in rail transport1871 introductionsRailway signalling block systems