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.

Upcoming Events & Meetings


Transportation Conformity Working Group

Apr 24, 2018; 10:00 AM-12:00 PM
@ SCAG Main Office

Logistics and Supply Chain Summit

Apr 26, 2018; 8:00 AM-3:00 PM
@ Sheraton Fairplex Conference Center, Pomona

2018 Regional Conference & General Assembly

May 03, 2018; All Day Event
@ Renaissance Indian Wells Resort & Spa
News and Announcements
PRESS RELEASE: Students & Public Invited to Re-Imagine Merrimac Way in Costa Mesa
Posted April 18, 2018
Costa Mesa, Calif. –The City of Costa Mesa and the Southern California Association of Governments...
Norwalk Green Line Extension Study On Hold
Posted April 05, 2018
In coordination with the City of Norwalk, SCAG is temporarily pausing work on the Norwalk Green...


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For more information on Corridor Studies, visit SCAG's Corridor Planning "Completed Studies" webpage.
The Active Transportation Work Plan is a 4 Year work plan from 2012-2016. The Work Plan indicates how we will implement the 2012 RTP/SCS active transportation component as well as preparation for...
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Transportation Related Links
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 (Caltrans) improves mobility across the state with core programs in Aeronautics, Highway Transportation, Mass Transportation, Transportation Planning, Administration and the Equipment Service Center.​
The Federal Highway Administration (FHWA) provides stewardship over the construction, maintenance and preservation of the nation’s highways, bridges and tunnels.