Gov. Code, § 92015

“Rapid rail transit system” or “project” means land, buildings, all improvements thereto, work, property, or structures, real or personal, rolling stock, rights-of-way, easements, rail lines, rail beds, stations, platforms, switches, yards, terminals, parking lots, and any and all other facilities and equipment necessary or convenient for the conduct of rapid rail transit service, and all other structures, facilities, or equipment now or hereafter developed or useful for the conduct of rapid rail transit service, underground, upon or above the ground, and under, upon, or over public streets, highways, bridges, or other public ways or waterways, together with all physical structures necessary or convenient for the access of persons and vehicles thereto.