Act 245 of 1974, to authorize issuance of bonds to provide funding to plan, acquire, construct, and equip transportation systems and to make loans and grants for that purpose.
Source for Popular Vote data: Michigan Department of Management and Budget, comp., "Official Canvass of Votes, General Election November 5, 1974 Proposal D," Michigan Manual 1975-1976 (Lansing: Michigan Department of Management and Budget, 1974)