Michigan Compiled Laws, Chapter 247. Highways § 247.704

Sec. 4. A city or village shall not pledge, for annual debt service requirements, in excess of 50% of the revenues received, during the fiscal year next preceding any borrowings, from the motor vehicle highway fund pursuant to 1951 PA 51, MCL 247.651 to 247.675. This act does not prohibit successive borrowings if the total amount of revenues pledged for annual debt service requirements does not exceed 50% and if the total aggregate amount of borrowing does not exceed an amount which 50% of the revenues will service as to annual principal and interest requirements.Debt service on any bonds that have been refunded under this act shall not be included in the calculation of annual debt service requirements under this section.