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SB 375 Regional Targets

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Senate Bill 375 requires CARB to develop and set regional targets for greenhouse gas (GHG) emission reductions from passenger vehicles. CARB must update the regional targets at least every eight years, with the option of revising them every four years.

CARB’s GHG emission targets for years 2020 and 2035 are intended to help achieve significant GHG reductions from changes to land use patterns and improved transportation networks in support of the State's climate goals as well as in support of statewide public health and air quality objectives. Metropolitan planning organizations (MPOs) must prepare sustainable communities strategies (SCS) that will reduce GHG emissions to achieve these regional targets, if feasible to do so.

2026 Regional Targets Update

Pursuant to SB 375, CARB is required to update the regional targets no later than 2026. CARB staff began the target update process in 2024 with a public workshop and plans to conclude it in 2026 with Board approval of the new targets. CARB staff will update the Board in the fall 2024 Joint Meeting and hold a second public workshop in early 2025. For more information on this effort, please contact sustainablecommunities@arb.ca.gov.

July 2024 Public Workshop

CARB staff held a public workshop on July 23, 2024, to provide information to the public about the target update and proposed timeline. CARB staff also received feedback about what factors to consider while developing its regional target recommendations for the CARB Board.

These are the materials from the workshop and the workshop the recording:

During the workshop, in addition to the regional targets update CARB staff also presented on proposed medium-term changes to the CARB SCS evaluation guidelines, received comments, and responded to questions. See the SCS Evaluation Resources webpage for further information on the evaluation guidelines update.

MPO Regional Targets Recommendations

As required in SB 375 and to promote an inclusive process, CARB exchanges technical information with MPOs as part of the regional targets update. For this update, CARB staff sent a formal request on July 29, 2024, for MPOs’ recommendations and analysis and is working with MPOs to collect their recommendations by October 31, 2024.

Current Regional Targets

As of March 2018, CARB’s Board adopted the following regional targets to apply to each MPO region’s SCS.

MPOTargets Through September 30,2018Targets Beginning October 1, 2018
2020203520202035
MTC/ABAG-7%-15%-10%-19%
SACOG-7%-16%-7%-19%
SANDAG-7%-13%-15%-19%
SCAG-8%-13%-8%-19%
Fresno COG-5%-10%-6%-13%
Kern COG-9%-15%
Kings CAG-5%-13%
Madera CTC-10%-16%
Merced CAG-10%-14%
San Joaquin COG-12%-16%
Stanislaus COG-12%-16%
Tulare CAG-13%-16%
AMBAG0%-5%-3%-6%
Butte CAG1%1%-6%-7%
San Luis Obispo COG-8%-8%-3%-11%
Santa Barbara CAG0%0%-13%-17%
Shasta RTA0%0%-4%-4%
Tahoe MPO-7%-5%-8%-5%

a Targets are expressed as a percent change in per capita passenger vehicle greenhouse gas emissions relative to 2005.

b If SACOG is not able to secure the funding and commitments to implement their proposed pilot project, CARB staff would evaluate the SCS performance against an 18 percent target. See Appendix A. MPO Recommendations and CARB Staff Recommendations, pages A-7 through A-9 for further discussion.

c Recommended targets apply to the San Joaquin Valley MPOs third cycle SCS plans.

Information about the 2018 Regional Targets Update

CARB first set regional targets on September 23, 2010, and updated regional targets on March 22, 2018. Information and materials related to the 2010 target setting process is available upon request by emailing sustainablecommunities@arb.ca.gov. Information and materials related to the 2018 regional targets update is below: