California Air Resources Board

Metropolitan Planning Organization for the Bay Area

The Association of Bay Area Governments (ABAG) and the Metropolitan Transportation Commission (MTC) are jointly responsible for regional planning of the nine county, 101 city, San Francisco Bay Area. These agencies are responsible for developing the long-range regional transportation plan, known as the Regional Transportation Plan/Sustainable Communities Strategy (RTP/SCS). ABAG/MTC released its third draft RTP/SCS, known as Plan Bay Area 2050, along with a draft implementation plan and various supplemental reports in May 2021. The plan is considered a comprehensive update to the region’s second RTP/SCS (2017), and was adopted in Fall 2021.

Draft 2025 RTP/SCS (Plan Bay Area 2050+)

• CARB staff's Comment Letter on MTC's Draft Technical Methodology to Estimate Greenhouse Gas Emissions for Plan Bay Area 2050+ (October 2023) 
• CARB staff's Comment Letter on MTC's Revised Draft Technical Methodology to Estimate Greenhouse Gas Emissions for Plan Bay Area 2050+ (October 2024)

2021 RTP/SCS

• 2021 SCS CARB Executive Order accepting the ABAG/MTC’s determination that the Final SCS would meet the region's GHG emissions reduction targets (Nov. 2022) 
• CARB staff's technical evaluation of the ABAG/MTC’s Final Sustainable Communities Strategy (Nov. 2022)
• 2021 Final Plan Bay Area 2050, adopted Oct. 2021
• CARB comment letter on ABAG/MTC Draft SCS (July 2021)
• CARB comment letter on MTC Technical Methodology for the SCS (July 2021)

2017 RTP/SCS

• CARB Executive Order accepting ABAG/MTC's determination that the Final SCS would meet the region's GHG emissions reduction targets (June 2018)
• CARB staff's technical evaluation of the ABAG/MTC Final Sustainable Communities Strategy (June 2018)
• Plan Bay Area 2040, adopted July 2017

Past evaluations are available on request, contact sustainablecommunities@arb.ca.gov.