Section R. 408.11426 - Passageways and walkwaysRule 1426.
(1) A passageway under a conveyor shall have not less than 5 feet of headroom except a main aisle shall have not less than 80 inches of headroom. Where the headroom is less than 80 inches, telltales and illumination of not less than 10 foot candles shall be provided to indicate low headroom.(2) A maintenance walkway shall be not less than 18 inches wide where it runs along a conveyor.(3) A walkway along a conveyor in a pit or tunnel shall have illumination of at least 10 foot candles when an employee is required to work in the area.Mich. Admin. Code R. 408.11426