; and (4) to coordinate Federal resources for eligible projects in certified priority investment areas. 4. State plans (a) Establishment To be eligible for assistance under section 5 or any of sections 7 through 11, a State shall, in coordination with metropolitan planning organizations, transit agencies and local governments, including tribal governments, within the State, develop a plan for equitable transit-oriented development and mobility corridors that proposes priority investment areas and projects proposed to be carried out in those areas. (b) Purposes The purposes of the eTOD and Mobility Plan shall be the following: (1) To identify priority investment areas in the State with a need for a comprehensive investment strategy to keep and revitalize existing neighborhoods and corridors while maintaining and enhancing housing and transportation affordability and creating equal opportunity for existing residents and businesses. (2) Support implementation of local and community transportation and land use plans consistent with sustainable State, regional, and local growth plans, policies, and strategies to achieve quality of life, economic vitality, and greenhouse gas reduction goals. (3) Encourage and create convenient, safe multi-modal access to the public transportation system, with an emphasis on non-motorized access and neighborhood walkability and mobility. (4) To establish the period covered by the eTOD and Mobility Plan. (5) To serve as the basis for Federal and State investments within the State. (c) Criteria for State plans The eTOD and Mobility Plan shall contain the following: (1) Clearly integrate State and regional housing and transportation improvement plans and implement an accountability mechanism that ensures an individual’s average combined housing and transportation cost does not exceed 40 percent of total household spending for such individual. (2) Create a shared vision and implementation plan for priority investment areas for infrastructure, climate mitigation, and development. (3)