District of Columbia ITS Architecture

Interface: DDOT TMC and DDOT Traffic Signals

(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 TMC	hri request (P) hri control data (P) traffic sensor control (E) signal control data (E/P)	DDOT Traffic Signals
DDOT Traffic Signals	field device status (P) hri status (P) ups activation_ud (E) traffic flow (E) speed monitoring information (E) signal control status (E/P) request for right-of-way (E/P)	DDOT TMC