District of Columbia ITS Architecture

Interface: DDOT TMC and DDOT Lane Control 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	reversible lane control (P) freeway control data (P) lane control data_ud (P)	DDOT Lane Control Signals
DDOT Lane Control Signals	field device status (P) reversible lane status (P) hov data (P) freeway control status (P) lane control status_ud (P) traffic flow (P)	DDOT TMC