Our 2023 group of warehouse employees are guys in their early 20s and they started using blue tooth external speakers on their Crown RC5500s we have over a dozen of those models plus 3 or 4 PE riding pallet jacks pulse a few order pickers our warehouse is over 100000 SQ with dozens of intersecting alis the music is very loud so loud there is no way these guys in their early 20s can hear the traction safety alarms. I do not see any forklift safety rules regarding very loud music to reference on the internet