(1) The department shall cooperate with the counties, cities, towns, and community reinvestment agencies in the construction, maintenance, and use of the highways and in all related matters, and may provide services to the counties, cities, towns, and community reinvestment agencies on terms mutually agreed upon.

(2) The department, with the approval of the governor, shall cooperate with the federal government in all federal-aid projects and with all state departments in all matters in connection with the use of the highways.

(3) The department: (a) shall inspect all work done by a public transit district under Title 17B, Chapter 2a, Part 8, Public Transit District Act, relating to safety appliances and procedures; and (b) may make further additions or changes necessary for the purpose of safety to employees and the general public.

(a) shall inspect all work done by a public transit district under Title 17B, Chapter 2a, Part 8, Public Transit District Act, relating to safety appliances and procedures; and

(b) may make further additions or changes necessary for the purpose of safety to employees and the general public.

(4) (a) The department may assume responsibility for any public transit project that traverses any portion of the state highway systems. (b) To determine whether the department will assume responsibility for a public transit project, the executive director and the public transit agency proposing the development shall jointly determine whether the department will assume responsibility.

(a) The department may assume responsibility for any public transit project that traverses any portion of the state highway systems.

(b) To determine whether the department will assume responsibility for a public transit project, the executive director and the public transit agency proposing the development shall jointly determine whether the department will assume responsibility.