Smart Corridor

The San Mateo County Smart Corridor project is one of countywide significance. The Smart Corridor is designed to improve mobility of local arterial streets by installing Intelligent Transportation System (ITS) equipment, such as an interconnected traffic signal system, close circuit television (CCTV) cameras, dynamic message signs, and vehicle detection system, on predefined designated local streets and state routes. The ITS infrastructure provides local cities and Caltrans with day-to-day traffic management capabilities in addressing recurring and non-recurring traffic congestion.

The Smart Corridor project maximizes efficiency of the existing transportation network, smoothing traffic flow and leading to improved safety and reduced travel times. Concurrently, the project minimizes the impact of freeway incident traffic on local streets through proactive traffic management. The segments between City of San Bruno at the northern limits to the Santa Clara County line in the City of East Palo Alto has been completed. The South San Francisco segment is expected to be in the construction phase starting in spring of 2021. The Northern Cities project, consisting of the Cities of Daly City, Brisbane and Colma, is currently in the environmental clearance phase.

The project is funded using a combination of Transportation Fund for Clean Air fund from the Bay Area Air Quality Management District, Traffic Light Synchronization Program, Measure M ($10 Vehicle Registration License fee in San Mateo County), and State Transportation Improvement Program (STIP) grant.

For more project information, please contact Kaki Cheung, C/CAG Program Director, at

Map of San Mateo County Smart Corridor Project Limit and Status


Northern Cities Expansion Project Factsheet 

South San Francisco Expansion Project Factsheet