The backbone of
PASSAGE is a fiber optic network along county,
state, and Tollway roads which provides for data flow
between PASSAGE elements. Elements like:
real-time video, traffic signal controller data, Highway
Advisory Radio (HAR) messages, Computer Aided Dispatch
(CAD) data and web based information. The operators at
the Transportation Management Center (TMC) use the
network to manage all of the elements of PASSAGE.
Currently 165 miles long, originating from the
Transportation Management Center in Libertyville, this
fiber optic network connects approximately 250 traffic
signals in Lake County. Planned expansion over the next
few years will connect additional segements of fiber optic cable
and wireless communication equipment that will add over 150 signals to the
PASSAGE network.
