Read your link: > The drives have enough smarts to move safely around humans, communicate with nearby robots so they do not collide, and report any problems li

Read your link: > The drives have enough smarts to move safely around humans, communicate with nearby robots so they do not collide, and report any problems like spills or obstructions back to the controller. The robots are clearly designed to fail safe if they cannot communicate with the central controller. It would be an extremely poor design to have them operate in an unsafe mode in the event of interference in an unlicensed spectrum (or even a licensed spectrum, for that matter).