City of manteca citywide signals coordination at signalized intersections (approx. 71 locations). Citywide traffic signal coordination and timing pro

The Federal Highway Administration awarded a formula grant of $564,780 under the Congestion Mitigation and Air Quality Improvement Program (CMAQ, CFDA 20.268) to the California Department of Transportation (Caltrans) on October 29, 2025, with a completion date of June 30, 2028. The project involves citywide traffic signal coordination at approximately 71 signalized intersections in Manteca, California, designed to reduce transportation-related emissions and congestion in air-quality nonattainment areas.

Deliverables under this award include installation of 24 GPS time synchronization modules, updating signal cabinets and controllers as required, and developing and implementing time-of-day coordination plans across traffic corridors. The project scope encompasses field fine-tuning following deployment and before-and-after travel time analysis with a comprehensive timing and evaluation report documenting quantifiable reductions in traffic delay, stop events, fuel consumption, and vehicle emissions. This work aligns with CMAQ's objective to fund transportation infrastructure projects that improve air quality and reduce congestion in nonattainment and maintenance areas.

Project description

City of manteca citywide signals coordination at signalized intersections (approx. 71 locations). Citywide traffic signal coordination and timing project at 71 signals. The work includes installing 24 GPS time synchronization modules and updating cabinets and controllers as needed, developing and implementing time of day coordination plans across the corridors, conducting field fine tuning after deployment, and performing before and after travel time runs with a timing and evaluation report that documents reductions in delay, stops, fuel use, and emissions.