ISO 3691-4 is crucial international standard for AGVs ( Automatioc Guided Vehicle) and AGVS ( Automatic Guided Vehicle System), specifying safety requirement and verification for driverless indsutrial trucks. Released in 2020, it addresses both manufactures and operators outlining performance levels for safety functions, detection of persons, operation modes, braking systems. The standards also details procedures for risk reduction and validation of automated fuctions to ensure the safe operation of AGVs and AGVS in their inded enviroenments. http://www.pilz.com