Mich. Comp. Laws § 124.424
The authority shall endeavor to acquire facilities, assets and rights of existing and operating private or public transportation systems, however no liability other than for equipment and facilities shall be assumed or contracted for, by good faith negotiation and contract and in so doing shall not be required to comply with any statutory or charter limitations or prerequisites to such acquisition. If such contract provides only for operation of the transportation system by the authority or for acquisition without consideration, the transaction shall not be deemed to be a sale of a public utility within any constitutional, statutory or charter limitation or any revenue bond ordinance. In the event that negotiation does not result in a settlement, the authorities shall request in writing to the party owning such facilities and such party shall elect in writing within 15 days of such request between condemnation under the provisions of this act or binding final arbitration under the rules and procedures of the American arbitration association. Such election shall be limited to condemnation or arbitration and shall be final. Until such time as the authority shall have acquired the routes of a common carrier of persons certified by the Michigan public service commission and which common carrier is subject to the provisions of this act and not exempt under the provisions of section 6(c) the authority shall not operate competitive service over the same routes with such common carrier, except for existing competing service which is operated by a company acquired by the authority.
MCL 124.424