Chicago Transit Authority (CTA) Ravenswood Connector Rehabilitation Project

Chicago Transit Authority (CTA) Ravenswood Connector Rehabilitation Project Overview

Chicago, IL

To help increase the number of trains able to traverse the track while reducing delays during rush-hour commuting, GAI’s Train Control Group has designed and furnished a microprocessor-based signal-control system for the Chicago Transit Authority’s (CTA) Ravenswood Connector line-the elevated part of “L” between Armitage and the Loop currently used by the Brown and Purple Lines. The vital and non-vital microprocessors were placed into multiple bungalows, and will interface with the existing relay logic control at the adjacent CTA locations.

This design provides room for future expansion and upgrades to the signaling capabilities of the various locations. The first microprocessors, located inside the Cleveland Street bungalow, have been installed on the elevated structure as part of the Ravenswood Connector rehabilitation project. Additional vital and non-vital microprocessors have been installed in the Cleveland Street, Willow, and Illinois bungalows.

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