ISO 500-1 Agricultural tractors - Rear-mounted power take-off types 1, 2, 3 and 4 - Part 1: General specifications, safety requirements, dimensions for master shield and clearance zone
ISO 500-2 Agricultural tractors - Rear-mounted power take-off types 1, 2 and 3 - Part 2: Narrow-track tractors, dimensions for master shield and clearance zone
ISO 500-3 Agricultural tractors - Rear-mounted power take-off types 1, 2, 3 and 4 - Part 3: Main PTO dimensions and spline dimensions, location of PTO
ISO 789-13:2018 Agricultural tractors - Test procedures - Part 13: Vocabulary and specimen test report
ISO 789-9 Agricultural tractors - Test procedures - Part 9: Power tests for drawbar
ISO 8759-1 Agricultural tractors — Front-mounted equipment — Part 1: Power take-off: Safety requirements and clearance zone around PTO*, 2018-11-15 Update
BS ISO 789-1:2018 history
2018BS ISO 789-1:2018 Agricultural tractors. Test procedures. Power tests for power take-off