Mich. Comp. Laws § 484.3217

Sec. 17. (1) The authority may issue notes or bonds that are expressly stated not to be general obligations of the authority but that constitute limited obligations of the authority payable solely from and secured solely by the revenues, money, and property as the authority may specify. (2) The notes or bonds designated as limited obligations under this section shall not be payable from or secured by the reserve capital account, and any reserve fund established for the limited obligation notes or bonds shall not constitute a capital reserve fund under this act.