; (3) to encourage the innovation and investment necessary to achieve mass market modes of zero-emission vehicle-based public transportation; and (4) to reduce and displace fossil fuel use and reduce greenhouse gas emissions by accelerating the deployment of zero-emission vehicle-based public transportation in the United States. (c) Competitive grants (1) In general The Secretary shall establish a competitive process to select communities for the Program to receive grants. (2) Community selection criteria Not later than 150 days after the date of enactment of this Act, the Secretary shall publish a set of selection criteria for the grants competition that— (A) shall prioritize communities that demonstrate affordable modes of access to zero-emission vehicle-based public transportation for disadvantaged communities; (B) shall ensure, to the maximum extent practicable, that— (i) the combination of selected communities is diverse in population, population density, demographics, urban and suburban composition, typical commuting patterns, and climate; (ii) at least 1 community selected has a population of less than 500,000; and (iii) grants are of a sufficient amount such that each community will be able to provide broadly accessible zero-emission vehicle-based public transportation throughout the community; (C) may give preference to applicants proposing a greater non-Federal cost share