Minn. Stat. § 239.081: INSPECTING TRACK SCALE.

The division shall supervise and inspect all track scales, and may direct any carrier to transport, move, and switch to any track scale free of charge any car used in the inspection and testing of scales. The division shall require the installation and maintenance of track scales at terminals, warehouses, and at other points in the state where scales are deemed necessary. The division shall prescribe reasonable rules for the weighing of railroad cars and of freight.