Historical
DIN EN 12965:2009
Tractors and machinery for agriculture and forestry - Power take-off (PTO) drive shafts and their guards - Safety; German version EN 12965:2003+A2:2009
This standard specifies safety requirements and their verification for the design and construction of power take-off (PTO) drive shafts and their guards linking self-propelled machinery (or tractor) to the first fixed bearing of recipient machinery.
Deutsches Institut für Normung [din]