Main Content Act 191 of 1931 friendly link printer friendly bills affecting mcl index link Search within this Statute for LOCKING OF DOORSAct 191 of 1931AN ACT to prohibit the locking of doors of motor vehicles engaged in the business of carrying passengers for hire on the highways of this state and to provide a penalty for the violation thereof. History: 1931, Act 191, Eff. Sept. 18, 1931 The People of the State of Michigan enact: DocumentTypeDescription Section 256.531SectionMotor vehicles carrying passengers for hire; locking of doors prohibited. Section 256.532SectionViolation of act; penalty.