Our Work

Transportation

As the designated Metropolitan Planning Organization (MPO) for Imperial, Los Angeles, Orange, Riverside, San Bernardino and Ventura Counties, SCAG is mandated by the federal government to develop a multimodal long-range transportation plan that provides a 20-year vision for investing in our transportation system, and update it at least once every four years. Our plan, the Regional Transportation Plan/Sustainable Communities Strategy (RTP/SCS), addresses all modes of our transportation system, and reflects research and policy initiatives from each mode: active transportation, aviation and airport ground access, corridor planning, goods movement, high-speed rail, intelligent transportation systems, safety and security, transit, and transportation finance.

Transportation Trends Report

The SCAG region is home to a diverse and expansive mobility ecosystem, with public transit operators delivering services that span local fixed-route bus systems, regional transit networks, intercity services, and commuter rail—reflecting the region’s varied geography and population density.  

SCAG releases the bi-annual “Transportation Trends Report” to provide a timely assessment of transit ridership statistics, roadway performance measures, and telework patterns.  

To complete the latest version of this report, SCAG analyzed data through June 2025 for a core subset of transit agencies that represents a cross-section of public operators, including municipal systems, joint powers authorities, county transportation commissions, and transit districts.  

As of June 2025, transit ridership and vehicle miles traveled in the SCAG region have continued to recover from the impacts of the COVID-19 pandemic, though patterns vary by mode. Across all transit modes, bus ridership has led the recovery, followed by light and heavy rail, while commuter rail has been the slowest to return to pre-pandemic ridership levels. For automobile traffic, overall vehicle miles traveled is at 97 percent of pre-pandemic levels. Remote work continues to be a key factor in travel trends; approximately 34 percent of workdays were performed from home over the last year, contributing to reduced peak-hour demand across all travel modes. 

Read the “Transportation Trends Report” online for a complete report on the state of Southern California mobility. 

Related Links & Resources

Transportation Funding in California
This California Department of Transportation (Caltrans) PDF brochure includes charts prepared as visual aids to show the sources and distribution of transportation funds in California. 

The California Department of Transportation
The California Department of Transportation (Caltrans) improves mobility across the state with core programs in Aeronautics, Highway Transportation, Mass Transportation, Transportation Planning, Administration and the Equipment Service Center.​

US DOT Federal Highway Administration
The Federal Highway Administration (FHWA) provides stewardship over the construction, maintenance and preservation of the nation’s highways, bridges and tunnels.

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