District of Columbia ITS Architecture

Interface: DDOT PTSA and DDOT PTSA DC Circulator Bus

(E) = Existing Flow
(P) = Planned/Future Flow
(E/P) = Existing and Planned Flow - Flow appears as Existing and Planned

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Source	Architecture Flows	Destination
DDOT PTSA	transit traveler information (P) request for vehicle measures (P) transit vehicle operator authentication update (P) remote vehicle disable (P) alarm acknowledge (P) fare management information (P) bad tag list (P) transit vehicle operator information (P)	DDOT PTSA DC Circulator Bus
DDOT PTSA DC Circulator Bus	transit vehicle loading data (P) transit traveler request (P) transit vehicle operator authentication information (P) transit vehicle conditions (P) alarm notification (P) request for bad tag list (P) fare collection data (P) transit vehicle schedule performance (P) transit vehicle location data (P)	DDOT PTSA