District of Columbia ITS Architecture

Interface: Private Traveler Information Systems and DDOT PTSA

(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
Private Traveler Information Systems	transit information request (P)	DDOT PTSA
DDOT PTSA	transit and fare schedules (P) transit schedule adherence information (E/P) transit probe data (E/P)	Private Traveler Information Systems