1. Short title This Act may be cited as the Community Health and Clean Transit Act of 2018 . 2. Definitions In this Act— (1) the term covered loan means a direct loan made by the Secretary under section 4; (2) the term electric bus means a bus that is a zero emission vehicle (as defined in section 5339(c)(1) of title 49, United States Code) that is fully battery-powered; (3) the term eligible entity means an eligible recipient, as described in section 5339(a)(4) of title 49, United States Code; (4) the term eligible project has the meaning given the term in section 5339(c)(1) of title 49, United States Code, except that that definition shall be applied by substituting electric buses for low or no emission vehicles ; (5) the term eligible project cost — (A) means the cost of an eligible project; and (B) includes (and in the case of an eligible project described in clause (i), (ii), or (iii) of section 5339(c)(1)(B), means only)— (i) the incremental cost of acquiring an electric bus necessary to meet the needs of the eligible entity, as compared to the average cost of a diesel bus; and (ii) the cost of technical assistance for the acquisition, financing, and operation of an electric bus and related infrastructure, including technical assistance for route electrification, technology selection, and vehicle-to-grid interfacing; (6) the term Secretary , except as otherwise provided in this Act, means the Secretary of Transportation; and (7) the term subsidy amount means the amount of budget authority sufficient to cover the estimated long-term cost to the Federal Government of a covered loan— (A) calculated on a net present value basis