This SAE Standard applies to horizontal earthboring machines of the following types:a. Auger Machinesb. Pipe Pushersc. Rotary Rod Machinesd. Impact Machinese. Horizontal Directional Drilling MachinesAdditional information on machines of this type may be found in SAE J2022 and SAE J2305. This document does notapply to specialized mining machinery such as conveyors, tunnel-boring machines, pipe-jacking systems, andmicrotunnelers.1.1 PurposeThe purpose of this document is to encourage common terminology of machine control names, types, and definitions for horizontal earthboring machines.