Section R. 408.12186 - Ascending and descending gradesRule 2186.
(1) An operator shall ascend and descend grades of 10% or more at a speed of not more than 2 miles per hour.(2) When ascending or descending a grade that exceeds the back-tilt of the mast, the load shall be facing upgrade.(3) On all grades, unloaded trucks shall be driven with the load engaging means downgrade, tilted back, and raised only as far as necessary to clear the floor or road surface.Mich. Admin. Code R. 408.12186