This SAE Standard applies to off-road rubber-tired machines having rated speed capability exceeding 20 km/h. Only the following machine categories in SAE J1116 are included in the scope of this document. a. Earthmoving b. Other than earthmoving: except rollers and compactors c. General purpose industrial d. Forestry e. Specialized mining machinery Applicable steering systems include the following means of providing power for steering: a. Manual steering b. Power-assisted steering c. Full-power steering This document does not imply that secondary steering is mandatory. However, if secondary steering is provided, performance and test requirements are included. This document specifies steering system performance and test criteria, including optional secondary steering systems, which enable uniform evaluation of the steering capability of rubber-tired, off-road work machines.