This SAE Standard establishes a test method to measure drag force of self-propelled@ as well as towed@ construction@ forestry@ and industrial machines@ with or without payload@ as listed in SAE J/ISO 6165 and J1116. Drag force is measured as a function of travel speed. Rationale?? The rationale for moving SAE J873 to a Noncurrent status is that we are not aware that this standard is being used in industry today and no experts exist to maintain this document.