Chapter 6.5. Motor Carrier Safety * Article 9. Additional Equipment Requirements for School Buses School Bus Weight Limits.
Weights imposed upon the axles of school buses shall be limited as follows:
(a) One Axle. The gross weight on any one axle shall not exceed the rated capacity of the axle as certified to the department by the manufacturer of the chassis, or as indicated on the permanent data plate or labels required by Section 1272 of this title.
(b) Rear Axle. A school bus constructed after January 1, 1950, shall have no more than 75% of the gross vehicle weight on the rear axle, measured at the ground.