Notwithstanding any other law, the following provisions shall govern disputes between exclusive bargaining representatives of public transit employees and local agencies:

1. (a) The disputes shall not be subject to any fact-finding procedure otherwise provided by law.
2. (b) Each party shall exchange contract proposals not less than 90 days before the expiration of a contract, and shall be in formal collective bargaining not less than 60 days before that expiration.
3. (c) Each party shall supply to the other party all reasonable data as requested by the other party.

4. (d) At the request of either party to a dispute, a conciliator from the California State Mediation and Conciliation Service shall be assigned to mediate the dispute and shall have access to all formal negotiations.

   The provisions of this section shall not apply to any local agency subject to the provisions of Chapter 10 (commencing with Section 3500) of Division 4.