The district may acquire, construct, own, operate, control or use rights-of-way, rail lines, buslines, stations, platforms, switches, yards, terminals and any and all other facilities necessary or convenient for transit service within or partly without the district underground, upon or above the ground and under, upon or over public streets or other public ways, or waterways, together with all physical structures necessary or convenient for the access of persons or vehicles thereto and may acquire any interest in or rights to the joint use of any or all of the foregoing; provided that:

state freeways shall be subject to the approval of the State Department of Public Works and installations in other state highways shall be subject to Article 2 (commencing with Section 670), Chapter 3, Division 1 of the Streets and Highways Code.

The district may acquire, contract and negotiate for the services of any and all employees of any public or private agency or corporation operating transit facilities within the district.