W=500[(LN)/(N-1)+12N+36] |
where W = overall gross weight on a group of 2 or more consecutive axles to the nearest 500 pounds, L = distance in feet between the extreme of a group of 2 or more consecutive axles, and N = number of axles in the group under consideration; except that 2 consecutive sets of tandem axles may carry a gross load of 34,000 pounds each if the first and last axles of the consecutive sets of tandem axles are not less than 36 feet apart. The gross vehicle weight shall not exceed 80,000 pounds including all enforcement tolerances. Except for 5 axle truck tractor, semitrailer combinations having 2 consecutive sets of tandem axles, vehicles having a gross weight in excess of 80,000 pounds or in excess of the vehicle gross weight determined by application of the formula in this subsection are subject to the maximum axle loads of subsections (1), (2), and (3). As used in this subsection, "tandem axle weight" means the total weight transmitted to the road by 2 or more consecutive axles, the centers of which may be included between parallel transverse vertical planes spaced more than 40 inches but not more than 96 inches apart, extending across the full width of the vehicle. Except as otherwise provided in this section, vehicles transporting agricultural commodities shall have weight load maximums as set forth in this subsection.
MCL 257.722