TOWN COUNCIL MEETING
STAFF REPORT
MEETING DATE May 6, 2026
PREPARED FOR Mayor and Town Council
PREPARED BY Heather Abrams, Town Manager
SUBJECT Approve the Amended Measure AA Expenditure Plan, as Adopted by the Transportation Authority of Marin (TAM) Board on March 26, 2026, Following a Comprehensive Public Outreach and Review Process
RECOMMENDATION
Staff recommends that the Council approve the amended Measure AA Expenditure Plan (Attachment B), as adopted by the Transportation Authority of Marin (TAM) Board on March 26, 2026, following a comprehensive public outreach and review process.
BACKGROUND
The Transportation Authority of Marin (TAM) is the congestion management agency and transportation sales tax authority of Marin. TAM is an independent agency, and the TAM Board is composed of one elected official (councilperson) from every town and city in Marin and all five members of the Board of Supervisors. Council Member Blash is Fairfax’s representative on the TAM Board.
TAM was established by Marin County voters to support transportation infrastructure projects, programs, funding and planning efforts. TAM manages the Marin ½-Cent Transportation Sales tax, the Marin Vehicle Registration Fee, and coordinates other regional, state and federal funding sources for transportation improvements throughout the County.
On November 6, 2018, Marin voters approved Measure AA (76.7%) to renew and extend Measure A, the countywide ½-Cent Transportation Sales Tax. The Measure AA Expenditure Plan (“Expenditure Plan”) funds core transportation needs, including local streets and roads, Safe Routes to Schools, transit services, and highway improvements. Measure AA generates approximately $35 million annually, and since 2004, the ½-Cent Transportation Sales Tax has generated over $500 million in funding for Marin’s transportation needs. Please see the financial section of this report for Fairfax specific Measure AA funding information.
Measure AA requires the Expenditure Plan to be reviewed every six years to ensure funding reflects evolving transportation needs, community priorities, and emerging challenges. Transportation funding is dynamic, and the past six years since Measure AA was approved have had significant transportation changes including a global pandemic, the rise of work from home, changes to the transit network, and changing regional, state and federal funding frameworks.
Expenditure Plan Review Process
As a new requirement in the 2018 Measure AA Expenditure Plan, this review is the first of its kind. TAM staff began the expenditure plan review in October 2024 and included extensive public outreach, and
agency coordination with funding recipients, including public works directors, local agency management, and advisory committees. Outreach included over 30 meetings with stakeholders, working groups, and community members, as well as pop-up public engagement events held throughout Marin County. TAM staff have held multiple Board discussions on the process and have convened an ad-hoc committee of TAM board members to guide the review process and development of the recommended Expenditure Plan amendments.
Specific Milestones include:
• October 2024 – the TAM Board approved the process and schedule for the Measure AA Expenditure Plan Review
• April 2025 – the TAM Board was briefed on the initial findings after discussions with recipients of the measure, including public works directors and transit operators, and the Ad Hoc Committee.
These discussions focused on what has worked well, and what changes should be considered in the measure. During these meetings, TAM staff was requested to consider changes to multiple plan categories, including providing funding for large local roadway projects. • July 2025 – the TAM Board received an update on financial projections for Measure AA revenue, and a discussion on the idea of a “Reimagined Roadways” category to address project development of major roadway projects funded through a funding shift within the local roads category of the measure. The board also received an update on the financial forecasts for the crossing guard program and public outreach process.
• September 2025 – based on the July discussion, feedback from public outreach, and Ad Hoc Committee input, an initial discussion on proposed amendments to the Expenditure Plan were presented to the TAM Board for input and discussion.
• December 2025 – an informational item was presented to the TAM Board to summarize the final proposed changes to the Expenditure Plan and provide greater details of those changes to each affected category of the Expenditure Plan. Feedback from the TAM Board was heard and further considered for incorporation.
• January 2026 – The TAM board presented draft amendments to the expenditure plan and opened a 45-day public comment period.
• March 2026 – At the conclusion of the 45-day comment period, the TAM board authorized the Amended Expenditure Plan included as Attachment B.
In addition to the Board discussions, staff conducted multiple meetings for input and coordination with the following agency and advisory groups:
• Marin Public Works Association
• TAM Community Oversight Committee (COC)
• TAM Bicycle/Pedestrian Advisory Committee
• TAM Technical Advisory Working Group
• TAM Equity Working Group
• TAM/MMA Subcommittee
• TAM Measure AA Expenditure Plan Review Ad Hoc Committee
TAM Adopted Amendments to the Expenditure Plan
Amendments to the expenditure plan must be approved by the following process:
• A two-thirds vote of the TAM Board following a public hearing and 45-day public comment period; and
• Approval by a majority of jurisdictions representing a majority of the incorporated population, as well as approval by the Board of Supervisors.
On January 22, 2026, the TAM Board opened a 45-day public comment period on the proposed amendments. A public hearing was held on March 26, 2026, after which the TAM Board adopted the following amendments:
DISCUSSION
The proposed amendments are limited and targeted. Approximately 95% of Measure AA funding remains unchanged, with updates to approximately 5% based on input received from the public and partner agencies, to improve flexibility in addressing local transportation needs, address funding gaps, and respond to emerging transportation needs while maintaining the intent of the voter-approved measure.
The proposed changes respond to local concerns, and provide the following:
Categories with Amendments
2018
EP
Rev
EP Amendments to the Expenditure Plan
Category 1.3 Local Interchanges 3.0% 2.5% Reduction of 0.5%.
Category 2.1 Local
Transportation Infrastructure 22.0% 18.0%
Provide funding for new Category 2.4 and clarified
eligibility to include roadway elements that integrate
environmental protections and mitigations.
Category 2.3 Sea Level Rise 1.0% 1.0%
Change eligible recipients to include TAM and
remove call for projects requirement.
Category 2.4 Innovative
Technology 0.5% 0.0%
Program removed to provide funding for new
Reimagined Roadways.
Category 2.4 Reimagined
Roadway 0.0% 4.5%
New Category. Maintain 0.5% from 2.4 plus 4% from
Category 2.1.
Category 3.2 Crossing Guard
Program 7.0% 7.5%
Add 0.5% from Category 1.3, Revise language to
specify number of guards rather than number of
sites/locations.
Category 4.6 Ferries and
Regional Transit 0.5% 0.5%
Change eligible recipients and broaden to First/Last
Mile at Major Transit Stops.
COC Membership Align with language in Measure B Expenditure Plan.
Review Timeline
Align with Measure B Expenditure Plan for
concurrent review processes.
• Funding for five crossing guards – Measure AA provides dedicated ongoing funding for crossing guards in Marin County. The crossing guard program annual operations currently exceed annual revenues, and additional revenue is needed to maintain 96 guards identified in the Measure AA Expenditure plan. TAM has instituted a number of cost reductions for the program, and the increase in ongoing revenues will help maintain five guarded locations in the county. TAM is also providing additional one-time funding outside of the Measure AA amendments to maintain guards in the field.
• Funds for “Reimagined Roadways” category – To respond to requests from local jurisdictions, the expenditure plan amendment includes dedicated funding to advance project development on major roadways and intersections; for which no dedicated measure funds currently exist. Under the previous expenditure plan (Measure A TAM), local road improvements were funded through local formula funding, and through a Major Road category. This change would reintroduce funding for major road improvements to allow TAM and local agencies to respond to infrastructure needs in these corridors.
• Funds for local road improvements – The measure continues to provide ~$5.8 million/year to jurisdictions for local streets and roads from TAM in addition to ~$22 million/year for roadway maintenance from other funding sources. Clarified that roadways elements which include integrated environmental protections and mitigation are an eligible use of this funding. • Maintains current project development process for Interchange program - the amendment to the measure maintains the current project development process for interchange improvements, providing ongoing funding for project development of key interchange improvements on US 101. • Additional amendments – the remaining amendments do not directly impact funding and include updating program eligibility and administrative provisions, specifically: changes to eligible recipients in two categories (sea level rise, and ferries & regional transit), COC membership (allows TAM Board to add members from underrepresented groups), and frequency of future reviews (to align timing with required reviews for the Vehicle Registration Fee, Measure B).
Additional information about Measure AA and the review process is also available on TAM’s website at:
https://www.tam.ca.gov/funding/measure-a-renewal/.
The TAM Board has completed its required review, public outreach, and adoption process. TAM is now seeking approval from local jurisdictions, including Fairfax, as required under Measure AA. The following jurisdictions have approved the expenditure plan: Marin County, San Anselmo, Larkspur, San Rafael, and Corte Madera.
FISCAL IMPACT
TAM’s proposed restructuring of funds will cut approximately $27,000 of local interchange funds, for which Fairfax currently doesn’t have to compete. However, TAM’s proposed Reimagined Roadways project may benefit Fairfax more, by enhancing TAM’s funding focus on regional projects. For example, repairs to Sir Francis Drake Blvd, which flows through Fairfax and connects several jurisdictions in Marin (currently maintaining the portion of Sir Francis Drake Blvd that is within Fairfax Town limits is
exclusively Fairfax’s responsibility despite it being a throughway for travelers driving east-west through Marin County).
Fairfax’s Measure AA total budget for FY 26-27 is shown in the Town’s Proposed budget in fund 22- 715. The Town’s Proposed Budget FY 26-27 Measure AA reflects funds going to the Meadow Way Bridget project (51-856), the Slurry Seal/Street Resurfacing and Repair project (51-887), and the Park Road Storm Drain project (51-827).
ATTACHMENTS
A. TAM Staff presentation
B. Amended Expenditure Plan
C. Measure AA Amended Expenditure Plan Fact Sheet
Transportation Authority of Marin
Measure AA Expenditure Plan Amendments
May 6, 2026
Presentation to Fairfax
ATTACHMENT A
2 TAM is the…
• Congestion Management Agency (CMA)
• Transportation Sales Tax Authority (2004 Measure A, 2018 Measure AA) • Vehicle Registration Fee Authority (2010 Measure B)
Who we are…
• 16-member Board of Commissioners – all five County Supervisors, plus one representative from each city/town
• Community Oversight Committee (COC)
• Staff of 14
Transportation Authority of Marin
3 What is Measure AA?
$35 M*
• ½ -cent Sales Tax dedicated to Transportation
• Measure A in 2004, Renewed as Measure AA in
2018
• Strong public support for overall framework –
76.7% voter approval
• Measure AA and TAM support:
• Improvements to Highways
• Local Roadways
• Safe Routes to Schools and Crossing Guards
• Local Transit Services
4 • Marin as a “Self Help” County
• Measure AA leverages regional, state and federal funds • Works along with Measure B to Address Countywide Priorities • Partner feedback
• Public Works – Flexible funding helpful
• Marin Transit – Measure AA vitally important
• Safe Routes – Highly visible programs
How Measure AA Supports Marin’s Needs
Sales Tax
47%
Vehicle
Registration Fee
3%
Investment
Earnings
6%
Project and
Program
Revenues
44%
FY 25/26 TAM Revenues
5 As stated in the Measure AA 2018 Expenditure Plan:
“To keep pace with the changing world of transportation, the TAM Board of Commissioners will review the Expenditure Plan every six years to consider amendments”
• Extensive process over last 18 months to seek input from Board, partners, program managers & the public
• Review included:
• Feedback from all Measure AA recipients
• Public Outreach & Community Group Discussions
• CTP Alignment Review
• Financial Projections
• Travel Trends & Forecasts
• Good Governance Review
Measure AA – Six Year Review
6 Expenditure Plan Review Schedule
Collection of Measure AA Revenue Commenced April 1, 2019 TAM Board Approves Expenditure Plan Review Process and Timeline October 24, 2024 Expenditure Plan in Effect for Six Years March 31, 2025 Public Outreach Process April-December 2025
Present Draft Amended Expenditure Plan to TAM Executive Committee and Board September-December 2025
TAM Board Opens 45-day comment period/hearing for any changes proposed January 2026
45-day Comment Period Closes March 9, 2026
TAM Board Adopts Amended Measure AA Expenditure Plan March 2026 Present Amended Expenditure Plan to Cities, Towns, and County for Approval April/May 2026
Identify Expenditure Plan changes in TAM FY2026-27 Budget Process April-June 2026 Measure AA Expenditure Plan Review Schedule
We are here
7 Summer 2025 Public Outreach Effort
Ongoing Partner/Advisory Outreach
• TAM Community Oversight Committee
• TAM Bicycle/Pedestrian Advisory Committee
• TAM Technical Advisory Working Group
• TAM Equity Working Group
• Marin Public Works Association
• TAM/MMA Subcommittee
• TAM Measure AA Expenditure Plan Review Ad Hoc Committee • Public Comment Period January 29 - March 9
• Comments received: Newt Brigade supporters (230+) and opposition; MCOE; Marin Transit; Town of Ross
• City/Town Council Presentations – April/May
Public Outreach Summary
West Marin Dot Exercise
8 • No changes proposed to 95% of Measure AA funding
• Strategic changes proposed to 5% of Measure AA to respond to input received Summary of Proposed Measure AA Amendments
2018 Proposed EXPENDITURE PLAN AMENDMENTS
Category 1.3 Local Interchanges 3.0% 2.5% Reallocate 0.5% to support the Crossing Guard Program Category 2.1 Local Transportation
Infrastructure 22.0% 18.0%
Provide funding for new Category 2.4 and clarified eligibility to include roadway elements that integrate environmental
protections and mitigations.
Category 2.3 Sea Level Rise 1.0% 1.0%
Change eligible recipients to include TAM and remove call for projects requirement
Category 2.4 Innovative Technology 0.5% 0.0%
0.5% remains in Category 2.4 but reallocated to Reimagined Roadways from Innovative Technology
Category 2.4 Reimagined Roadway 0.0% 4.5%
New Category. Maintain 0.5% from Category 2.4 plus 4% from Category 2.1
Category 3.2 Crossing Guard
Program 7.0% 7.5%
0.5% from Category 1.3, Revise language to specify number of guards rather than number of locations
Category 4.6 Ferries and Regional
Transit 0.5% 0.5%
Change eligible recipients and broaden to First/Last Mile at Major Transit Stops
Additional Changes
COC Membership Align with Measure B
Review Timeline Align with Measure B for concurrent review processes 9 Amended to increase funds from 7% to 7.5%
• Program is 7% of Measure AA (increase from 4.2% in
Measure A)
• Program currently provides 96 guards at 96 locations
• Operational program - annual ongoing revenues needed
• Program exceeds annual revenue collection requiring
use of carryover
• Current revenue supports ~68 guards
• Expense reduction measures were implemented this cycle • Board approved use of one-time funding to shore up program in 2026, in combination with potential Measure AA increase • 0.5% increase will allow TAM to maintain 5 Guards
• Staff continues to pursue other funding sources
Category 3.2 Crossing Guards
10 Amended to include new program at 4.5% from
Category 2.1 and 2.4
• Background:
• Prior Major Roads funding from Measure A supported corridors throughout county; no similar program in Measure AA
• Public Works and Board Requests to address Major Road needs
• Current TAM has no dedicated funding for Major Roads
• Current Proposal:
• Get larger capital roadway projects “Shovel Ready”
• Focus on multi-jurisdiction, multi-agency, and multi-modal project development
• Advance CTP goals and strategies
• Support for innovation within Measure programs, rather than standalone program
New Category 2.4 – Reimagined Roadways
11 • Measure A Major Road Category:
• 13.25% for Local Transportation Infrastructure plus
• 13.25% for Major Roads ($38M in revenue collected from Measure A) • Funds distributed through 5 planning areas, delivering 9 projects Previous Measure A – Major Roads Background
Planning Area Jurisdiction Project
Measure A/AA
($M)
Project Cost
($M)
North Novato Novato Blvd./Diablo Ave. (Phase in Progress) $13.3 $15.0 Central San Rafael 4th Street $4.5 $5.5
San Rafael 3rd Street $13.0 $20.0
Southern Mill Valley Miller Ave. $10.3 $18.3
Mill Valley E. Blithedale Ave. $2.3 $3.7
Ross Valley Marin County Sir Francis Drake Blvd. US 101 - Wolfe Grade $7.2 $11.4 Marin County
Sir Francis Drake Blvd. Wolfe Grade - Ross
Limit $7.2 $11.4
West Marin County
Sir Francis Drake Blvd. Samuel P. Taylor -
Platform Bridge $5.8 $8.1
Marin County
Sir Francis Drake Blvd. Fairfax Limit - Samuel
P. Taylor $0.8 $2.1
Total $64.3 $95.5
12 Category 2004
(Meas. A)
2018
(Meas. AA)
2026 Proposed
(Meas. AA Rev.)
Local Streets & Roads 13.25% 22% 18%
Major Roads 13.25% 0%* 4.5%*
* Does not include off-the-top percent needed to fully fund 2004 commitments, anticipated to be approx. $2.35M/year until 2032
Local/Major Roads Funding History
• Measure AA funds now complemented by state funds
• Currently no dedicated funding source for advancing larger capital projects • Marin County has highest PCI in North Bay
• Proposed changes expected to have minimal impact on PCI 11,910,321
11,370,691
6,528,669
FY 24/25 Local Road Funds- All
Jurisdictions
State Gas Tax SB1 Supplement Measure AA
13 • Amended to provide 4% of funding to Category 2.4
• Strategic Plan change to offset funding shift for 2.1 • Double allocation” for FY26/27 – TAM will provide
funding in arrears and move to a reimbursement
processes, making two years’ of funding available
• Discussed with Public Works staff, support for
standardized project accounting & one-time additional
funding distribution
• Offsets funding shift from Measure AA amendment for
several years
• Eligibility Clarification for funds in this category: roadway components that include integrated environmental
protections and mitigations are eligible use of funds
Category 2.1 Local Transportation Infrastructure
Estimated Available Amount
FY 25/26*
FY 26/27
Est. Reim**
FY 26/27
Est. Double
Allocation
Belvedere $69,558 $55,652 $125,210
Corte Madera $263,615 $210,915 $474,530
Fairfax $198,145 $158,534 $356,679
Larkspur $291,883 $233,533 $525,416
Mill Valley $394,035 $315,264 $709,299
Novato $1,282,710 $1,026,284 $2,308,994
Ross $70,201 $56,167 $126,368
San Anselmo $317,375 $253,929 $571,304
San Rafael $1,417,855 $1,134,412 $2,552,267
Sausalito $196,284 $157,045 $353,329
Tiburon $241,760 $193,430 $435,190
County $2,409,225 $1,927,598 $4,336,823
Total Available $7,152,646 $5,722,763 $12,875,409
*based on 22% of collected FY 25/26 Measure AA Funding plus carryovers **based on 18% of projected FY 26/27 Measure AA funding 14 • Align Timeline of Measure AA and B Reviews
• Currently: Measure AA review is every 6 years, Measure B review is every 10 years • Aligning allows for a broader view of Local Funds, and increased efficiency in conducting reviews together • Conduct next review in 6 years, followed by 8-year review cycle • COC Membership Changes to Align Measure AA and B Language • Category 2.3 Sea Level Rise
• Identify TAM as an eligible recipient and remove call for project language • Category 4.6 Ferries and Regional Transit
• Identify TAM and Marin Transit as eligible recipients and broaden focus to all Major Transit Stops (i.e., SMART and Ferry Stations)
Measure AA Exp Plan – Additional Changes
15 To amend the Measure AA Expenditure Plan:
• Vote/approve by two-thirds of the TAM Commissioners (scheduled March 26, 2026) • Amendments to be presented to each of the cities and towns in Marin County and to the Board of Supervisors for their approval (scheduled for April/May) • Requiring a majority vote of 50+% of the cities or towns, representing 50+% of the incorporated population
• As well as a majority vote of the Board of Supervisors • Action requested to approve the Amended Expenditure Plan as approved by the TAM Board on March 26, 2026
Action Request for Local Jurisdictions
16 Questions and Discussion
TAM Staff thanks our partners, interested parties and the public for their participation and valuable insights during this review process.
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Measure AA Expenditure Plan
Amendment #1
March 26, 2026 (adopted), July 1, 2026 (effective date) Pursuant to the actions of the participating jurisdictions and the TAM Board of Commissioners as defined by the Measure AA Expenditure Plan approved by the voters of Marin County in November 2018, the following amendments to said Expenditure Plan are hereby incorporated into the Expenditure Plan effective XXXXXXXX.
CATEGORY 1 (Change in funding distribution)
The following change in funding distribution shall supersede previous funding distribution language:
Percentage of Sales Tax Funds equal to 7% 6.5% of the total collected net of existing obligations and administration to be used in Category 1, with 3% 2.5% dedicated to “Improve Highway 101 local interchanges and freeway access routes to reduce congestion, improve local traffic flow, and address flooding impacts throughout the county.”
CATEGORY 2 (Multiple Changes)
The following change in funding distribution shall supersede previous funding distribution language:
Percentage of Sales Tax Funds equal to 22% 18% of the total collected net of existing obligations and administration to be dedicated to “Maintain and manage local roads to provide safe and wellmaintained streets for all users. All investments will consider the needs of all users in accordance with local practices (i.e. “Complete Streets” practices) that have been adopted in each city, town, and the County. Improvements to maximize the efficiency, effectiveness, and resiliency of our transportation system to be determined by local jurisdictions and may include:
• Paving, reconstruction, roadway repair, drainage, lighting, landscaping, and other roadways system components including integrated environmental protections and mitigations. • Bike lanes and paths
• Safe pathways to transit and bus stop improvements
• System enhancements to accommodate new technologies such as signal coordination, real time information
• Investments to address congestion on local street and road corridors • Facilities and support including project management, technical services and outreach to support alternative fuel vehicles, electric vehicles, zero emission vehicles and autonomous vehicles
• Municipal fleet conversion to alternative fuel vehicles including electric vehicles • Improvements to address sea level rise and flooding on local streets
ATTACHMENT B
2 of 3
The following change in description shall supersede all previous language:
Sea Level Rise and Resiliency
Marin’s transportation infrastructure is sited along vulnerable bay frontage that is at increasing risk of flooding and erosion from sea level rise and king tide events. This funding would be utilized to support protecting and adapting Marin’s roadways and related infrastructure to the effects of sea level rise and flooding. These funds can be used to serve as seed money to find solutions, attract matching grants and leverage private investments to meet the challenges and vulnerabilities identified in numerous planning efforts including those of Bay Wave, and CSMART. The funds can also be utilized for facilities to support alternative fuel vehicles including electric vehicles. Sea Level Rise and Resiliency funds shall be available to TAM and to eligible recipients including local jurisdictions through a process defined by TAM.
The following change in funding distribution and description related to Innovation Technology shall be deleted and replaced with:
Percentage of Sales Tax Funds equal to 4.5% of the total collected net of existing obligations and administration to be dedicated to “Reimagined Roadways: Provide planning and project development activities for large roadway capital projects.”
Description: “With traffic and land use changes in Marin County, there is a growing need to advance large roadway capital projects, specifically roadway corridors or intersections, to support multijurisdictional travel and multiple modes of travel. This category would support the identification and planning of roadway projects of countywide significance. The funds would be used by TAM to advance prioritized projects through the initial project delivery phases and compete for construction funding.
TAM would work with local jurisdictions to determine corridor needs in alignment with the Countywide Transportation Plan (CTP) and the ability to leverage outside grants from regional, state or federal funding sources.”
CATEGORY 3 (Change in funding distribution)
The following change in funding distribution shall supersede previous funding distribution language:
Percentage of Sales Tax Funds equal to 11.5% 12.0% of the total collected net of existing obligations and administration to be used in Category 3, with 7.0% 7.5% of the total collected net of existing obligations and administration to be dedicated to “Maintain the crossing guard program, providing funding for crossing guards throughout Marin County”.
The following description change will supersede all previous description language:
All references to number of sites and/or intersections will be replaced with number of crossing guards.
CATEGORY 4 (Modified description)
The following description change will supersede all previous description language:
Expand access to Rail and Ferry Stations through first and last mile programs or services. Expand and maintain shared mobility services, and new transit connections to address first and last mile connections to rail and ferry stations.
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Marin County residents and workers now have expanded regional transportation options to improve regional mobility, particularly during commute hours. Local residents and workers often require first and last mile connections to make these regional options accessible, including access to the ferry and express bus services. This category helps to expand and maintain first and last mile solutions that provide access to regional transit stops for Marin’s residents and commuters. The funds can be accessed by TAM, Marin Transit, or Golden Gate Bridge, Highway, and Transportation District as sponsors of shared mobility services such as bikeshare systems or new first/last mile connections (e.g. Shuttle service, new transit connections, or other shared mobility services) at major transit stops working in coordination with TAM.
COMMUNITY OVERSIGHT COMMITTEE (Additional language)
The following description change is in addition to all previous description language:
To accurately represent the voices of the communities in Marin, especially to timely address the needs and voices of the Equity Priority Communities (EPCs), the TAM Board has the authority to review and amend the COC membership structure when necessary.
AMENDMENTS TO EXPENDITURE PLAN (Modified and additional language) The following description change will supersede the previous description of the frequency of reviews (the remaining amendment description language is unchanged):
The Expenditure Plan must be reviewed periodically following passage to ensure that it responds to a rapidly evolving transportation landscape, incorporates innovations, and reflects current priorities.
The TAM Board may also consider an amendment, adhering to the process below, at the point of the scheduled review or at any time deemed necessary during the life of the Expenditure Plan.
The timing of the Measure AA Expenditure Plan review and the Measure B Expenditure Plan review will occur together for one consolidated, concurrent review for efficiency and effectiveness. The timing of the two review processes will occur concurrently during the second scheduled review for both Measures B and AA in 2032 to 2033 and will establish an eight-year cycle for both thereafter. This would provide four review cycles for Measure AA, including a final one the year before the measure is due to sunset in 2049.
Measure AA: Marin County
½-Cent Transportation Sales Tax
Expenditure Plan Review Recommendations Factsheet
Expenditure Plan Review
Measure AA requires that the Expenditure Plan be reviewed every six years to ensure funds reflect current transportation needs, community priorities, and emerging challenges. This process represents the first six-year review of the ½-Cent Transportation Sales Tax Expenditure Plan.
Overview of Amendments
The proposed amendments are limited to reflect robust public and partner input. 95% of Measure AA funding remains unchanged. ~5% of funding would be updated to improve flexibility, address funding shortfalls, and respond to future transportation needs while honoring voter intent.
Public and
Stakeholder Input
Throughout 2024-2025, over
30 meetings were conducted
with advisory committees, local
agencies, community members,
and transportation partners.
Feedback demonstrated strong
overall support for the Measure AA
funding and proposed updates.
Milestones
January 22, 2026: Draft
amendments released and 45-day
public comment period begins
March 26, 2026: TAM Board
considers final adoption of the
amended plan
Spring 2026: Updates shared with
Marin cities, towns, and the County
Fiscal Year 2026–27: Changes
incorporated into TAM’s budget
Key Proposed Changes to the
Measure AA Expenditure Plan*
Crossing Guard Program (7.0% to 7.5%)
Why: Prevents 5 Crossing Guards from being removed
Reallocated from Local Interchanges Program
(3.0% to 2.5%)
• Addresses rising costs and provides sustainable
funding for ~5 crossing guards per year
• ~$20 million remains available to advance three
interchanges for ~6 years of project development
while TAM pursues additional grants/funds
New Reimagined Roadways Program (4.5%)
Why: Establishes funding for large capital projects
that currently have no local funding source
Reallocated from Local Streets and Roads formula
funding to jurisdictions (22% to 18%)
and Innovation Technology (0.5% to 0%)
• Establishes a new countywide program to support
large, multi-jurisdictional roadway projects focused
on safety, congestion relief, and climate resilience
• Continues to provide ~$5.8 million/year to
jurisdictions for local streets and roads from
TAM in addition to ~$22 million/year for roadway
maintenance from other funding sources.
MARCH 2026
*Additional amendments do not affect funding.
Visit www.tam.ca.gov for a complete list of proposed amendments.
ATTACHMENT C
For More
Information
Visit the TAM
website at
www.tam.ca.gov
$35M
ANNUALLY
Estimated average annual
revenue from Marin’s
½-cent transportation
sales tax
Reduce congestion
on US-101 and
adjacent roadways
Maintain, improve,
and manage local
roads and related
infrastructure
3% Rural Transit
9.5% Seniors and
People with Disabilities 4% Facilities
5% Schools
Reduce school-related
congestion and
provide safer access
to schools
11.5% Maintain and
expand efficient
and effective local
transit services
55%
26.5%
7%
33% Local Transit
0.5% Access
HOW ARE SALES TAX
FUNDS DISTRIBUTED?
■ FUNDED highway improvements, including the Marin-Sonoma Narrows project and interchange enhancements along US-101 and I-580. ■ IMPROVED local transit service with new options for seniors, people with disabilities, and rural communities.
■ MADE school travel safer by improving walk and bike routes, expanding Safe Routes to Schools to nearly 60 schools, and adding crossing guards at over 90 intersections.
■ INVESTED in cleaner, more equitable transportation including bike/ped infrastructure and senior mobility programs.
■ IMPLEMENTED AND MAINTAINED local road improvements,
including pothole repair to meet the needs of drivers, bicyclists, pedestrians, and transit users.
KEY ACCOMPLISHMENTS
Marin County
Voters approved
Measure A in 2004
and renewed it as
Measure AA
in 2018 with
76.7% approval.
Keeping Marin Moving