UrbanMassTransit46Abstract:ThePassengerInformationSystem(PIS)hasnowbeenintroducedmoreandmoreintheurbanrailconstructionsasaindependentsystemtoimproveoperationefficiencyandservicelevel,alongwiththedevelopmentofUrbanRailTransit.ThispapersummarizesthedevelopmentofPIS,andpresentsaprospectforitsintendingapplication.Keyword:Urbanrail,PIS,Informationdisplay,andDevelopmentUrbanMassTransit47UrbanMassTransit48--