Section R. 408.12207 - Definitions; R to TRule 2207.
(1) "ROPS" means a rollover protective structure. ROPS may be a protective frame or a protective enclosure mounted to a tractor.(2) "Self-loading" means the capability of a tractor to pick up, carry, set down, and, in case of high-lift types, to stack or tier its load without the aid of external means.(3) "Service brake" means a device designed to bring a moving tractor to a halt.(4) "Tractor" means 1 of the following: (a) "Agricultural-type tractor" means a 2- or 4-wheel-drive vehicle of more than 20 engine horsepower and designed to furnish the power to pull, carry, propel, or drive attachments primarily intended for use in agricultural operations.(b) "Industrial tractor" means a 2- or 4-wheel-drive vehicle of more than 20 engine horsepower designated as an industrial tractor by the manufacturer, but having the appearance of an agricultural tractor, and designed to furnish the power to pull, carry, propel, or drive attachments primarily intended for industrial use.(5) "Tiering" means a process of placing a load on or above another load.(6) "Tractor weight" means the combined weight of the protective frame or enclosure, all fuels, and other components required for the normal use of the tractor.Mich. Admin. Code R. 408.12207