ABBREVIATION LIST Abbreviations Definitions 2WD 4WD API ASAE ASTM DIN DT fpm GST Hi-Lo HST m/s PTO RH/LH ROPS rpm r/s SAE SMV Two Wheel Drive Four Wheel Drive American Petroleum Institute American Society of Agricultural Engineers, USA American Society for Testing and Materials, USA Deutsches Institut für Normung, GERMANY Dual Traction z4WDx Feet Per Minute Glide Shift Transmission High Speed-Low Speed Hydrostatic Transmission Meters Per Second Power Take Off Right-hand and left-hand sides are determined by facing in the direction of forward travel Roll-Over Protective Structures Revolutions Per Minute Revolutions Per Second Society of Automotive Engineers, USA Slow Moving Vehicle