ASABE Revises Braking Series Standards

The American Society of Agricultural and Biological Engineers (ASABE) has revised two parts of the ANSI/ASABE S648, Agricultural Field Equipment Braking, series of machinery standards.

Part 3, ANSI/ASABE S648-3.1, Requirements for Self-Propelled and Special Self-Propelled Machines, was revised to align the self-propelled machine specifications with those for the special self-propelled machines (integral power unit with front drive axle and major mass on front axle). Additional changes were made to match the original requirements of the now-withdrawn ASABE standard S365.

Part 5, ANSI/ASABE S648-5.2, Requirements for the Interface between Towing Vehicle and Towed Vehicles, was revised to correct a unit conversion error.

For information on this or any other ASABE standard, contact Scott Cedarquist at 269-932-7031 or at A current listing of all ASABE standards projects can be found on the ASABE web site at