ITS Architecture - 2021 Update

CEN - EN 15531-1: Service Interface for Real-Time Information (SIRI)

Source Element	Destination Element	Flow
Madison County Transit Dispatch Center	Illinois DOT Traffic Operations Center	transit and fare schedules
	Metro Transit System Website	transit and fare schedules
	Metro Transit System Website	transit schedule adherence information
Metro Transit Operations Center	Illinois DOT Traffic Operations Center	transit and fare schedules
	Illinois DOT Traffic Operations Center	transit probe data
	Illinois DOT Traffic Operations Center	transit schedule adherence information
	Metro Transit System Website	transit and fare schedules
	Metro Transit System Website	transit probe data
	Metro Transit System Website	transit schedule adherence information
	Missouri DOT Gateway Guide TMC	transit and fare schedules
	Missouri DOT Gateway Guide TMC	transit probe data
	Missouri DOT Gateway Guide TMC	transit schedule adherence information
	Missouri DOT Website	transit and fare schedules
	Missouri DOT Website	transit schedule adherence information
	Regional Traveler Information System	transit and fare schedules
	Regional Traveler Information System	transit probe data
	Regional Traveler Information System	transit schedule adherence information
St Charles City Transit Center	Regional Traveler Information System	transit and fare schedules
	Regional Traveler Information System	transit probe data
	Regional Traveler Information System	transit schedule adherence information
	St Charles County Traffic Operations Center	transit and fare schedules
	St Charles County Traffic Operations Center	transit probe data
	St Charles County Traffic Operations Center	transit schedule adherence information