CTA Transit Signal Priority (TSP)
Description
Implementation of a system of TSP corridors in the CTA service area. This project covers all elements necessary to install, implement, and maintain transit signal priority corridors, including communications infrastructure, signal upgrades/equipment, vehicle equipment/on–board technology, and agreements with CDOT for traffic signal operations. TSP has been implemented on Western Avenue (Howard to 79th), Ashland Avenue (Cermak to 95th), and Jeffery Boulevard (73rd to Anthony). In 2026, construction work (Traffic Signal Modernizations and other civil work) will start along Ashland Avenue (Irving Park to Cermak) for TSP implementation.
Status: Existing
Timeframe: Long
Stakeholders
| Chicago Transit Authority |
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| City of Chicago Department of Transportation |
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| City of Chicago OEMC and TMA |
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| Travelers |
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Inventory
| Chicago Transit Authority Bus Vehicles |
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| Chicago Transit Authority Control Center |
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| City of Chicago Communication Infrastructure |
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| City of Chicago OEMC Field Equipment |
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| City of Chicago TMC |
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Services
| PT09–Transit Signal Priority (CTA Transit Signal Priority) |
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Interfaces
| Source | Flow | Destination | Status |
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| Chicago Transit Authority Bus Vehicles | bus priority request | City of Chicago OEMC Field Equipment | Planned |
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| Chicago Transit Authority Bus Vehicles | local signal priority request | City of Chicago OEMC Field Equipment | Planned |
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