Application of Signal Performance Measures for the A-Line traffic signal network

The contract concerns the application of signal performance measures for the Metro A-Line traffic signal network in Pasadena, California. The Metro A-Line operates on its dedicated right-of-way with at-grade crossings at key east-west arterials—Glenarm Street, California, and Del Mar Boulevards—within a perimeter defined by 18 signalized intersections. These intersections span major streets such as Arroyo Parkway, Raymond Avenue, Marengo Avenue, Fair Oaks Avenue, and Glenarm Street. Safety at these rail crossings is ensured through features like full quad-gates, pedestrian rail gates, beacons, and appropriate street markings in compliance with CPUC and MUTCD requirements. The traffic signal network is managed through two Advanced Traffic Management Systems (ATMS): Transparity (Swarco/McCain) and SCATS (Transcore), which coordinate intersection operation and control within the A-Line’s network. Additionally, a third-party RIO-TECH module provides real-time rail data at four intersections, data that the City collects at its Traffic Management Center but which currently does not impact signal control or timing. The solicitation, issued by the Transportation Department of Pasadena, is seeking proposals related to improving or analyzing signal performance measures, with a deadline for responses by April 30, 2026. The project managers listed as primary contacts are Victor Koo and Antonio Watson.