Unified Signal System Project - Progressive Design-Build Services

Dallas Area Rapid Transit (DART) is issuing a Request for Qualifications (RFQ) for Progressive Design-Build (PDB) services for the Unified Signal System (USS) Project. This project aims to modernize DART's Light Rail Transit (LRT) signal system across approximately 48 miles of alignment, encompassing the Central Business District (CBD), Red Line, and Blue Line. The scope of work includes upgrading existing segments (excluding the CBD segment) from Automatic Block Signaling (ABS) and Line of Sight (LOS) to a Digital Track Circuit-based Automatic Train Protections (ATP) signal system with cab signaling, aligning with the functionality of the Green and Orange Lines. The CBD section will see an upgrade to the existing Transit Signal Priority (TSP) system with enhanced train detection and prioritization features. Additionally, the project will improve signal system reliability through redundant power upgrades at critical locations. The expected release date for the RFQ is April 6, 2026. Certain design deliverables containing Sensitive Security Information (SSI), including the Preliminary Hazard Analysis, Threat and Vulnerability Assessment, and site condition reports, are available for in-office review at DART facilities upon execution of a Non-Disclosure Agreement (NDA).