Description
Update TDM ordinances and policies to account for regional efforts, such as the Air District’s employer requirements, and incorporate TDM measures and accountability into the development review process.
Implementation Details
- Develop a model TDM ordinance for adoption by member jurisdictions, establishing baseline requirements and that incorporates the Air District’s existing requirements for large employers.
- Recommend performance measures based on project size or proximity to major transit corridors.
- Include standard measures such as transit subsidies, telework support, secure bike parking, and parking cash-out policies in TDM program requirements.
- Provide technical guidance to smaller jurisdictions on implementation pathways and compliance monitoring.
Mitigation Potential
A new ordinance or set of policies would only apply to future or upcoming developments, meaning the shift will be incremental as the region grows. Depending on how widespread implementation is, the TDM policies included may provide significant impact for individual developments (especially major developments such as corporate campuses) which will aggregate to a wider impact on a regional scale.
For more details, see CALTRANS SB743 Program Mitigation Playbook, Transportation Demand Management (TDM), pg. 22-24 for VMT reduction quantification.
Linked Strategies
Equity Considerations
Policies should require developer-funded TDM programs in high-opportunity areas to reduce displacement risks. Include provisions for affordable housing tenants and equitable TDM access in density bonus programs.
Funding Sources
Requires staff time. One funding source is the Sustainable Transportation Planning Grant Program – Sustainable Communities – Competitive and Technical (Caltrans).
Implemented in TAM Area
Current TDM Implementation
Marin County’s legislative platform specifically calls out support for transportation demand management measures, including funding priorities for bicycle/pedestrian infrastructure, accessible mobility, and specific projects like the North-South Greenway. Marin Commutes, TAM’s TDM program, provides resources for employers, commuters, and residents to reduce single occupancy driving, including policy guidance.
TDM Benefit Locations
Additional actions like developing a model TDM ordinance and providing technical support to smaller jurisdictions within the county could help expand TDM policy support on the local level, since current policy efforts are led by county-wide initiatives.