Sand Canyon Avenue Regional Traffic Signal Synchronization Program (RTSSP) Project

The Sand Canyon Avenue Regional Traffic Signal Synchronization Program (RTSSP) Project is a regional initiative led by the City of Irvine in Orange County, California. The project focuses on upgrading traffic signal infrastructure and updating synchronization plans on Sand Canyon Avenue, specifically from Portola Parkway to the Interstate 405 Southbound ramps. The primary objectives are to address evolving traffic patterns and ensure signal timing is effectively coordinated with Caltrans ramp signals. Classified under NAICS code 237310, the project is identified as a minor modification of existing facilities. According to the Notice of Exemption dated November 19, 2025, the project is categorically exempt under Existing Facilities, Class 1, Section 15301(c) of the California Public Resources Code. Tiffany Barie, Associate Engineer for the City of Irvine, serves as the primary point of contact and the person responsible for carrying out the project.