Gov. Code, § 14081

(a) When the governing body of any public entity proposes to commence project planning, development, improvement, or acquisition for exclusive public mass transit guideways and their related fixed facilities, the governing body may enter into an agreement to have the department assist the public entity with such work by providing to it those services mutually agreed to by the governing body and the director. These services may include, but are not limited to, the employment of the department’s employees, facilities, equipment, and materials for such purposes as project planning and design; research and materials testing; plans, specifications, and estimates; acquisition of rights-of-way and relocation assistance; project contract administration and construction inspection; and overall project management.

(b) The governing body and the director may also enter into agreement for the department to assist the public entity in the performance of any other mutually agreed-upon services in connection with the public entity’s guideway transit responsibilities.