The factory has two or maybe three different types of robots delivering all sorts of things from packages to packaging to stainless steel bar.
the robots use the same walkways as the humans.
It seems more and more we are designing robots to occupy and utilize the same spaces as humans. And we're designing the robots to make the humans give way: they're slow, large, bulky, and just stop when confronted. I think it's because humans are a much better robot.
humans (generally, of course) are more agile, can route easily, and move our bodies in unexpected ways to accomplish the task (lift a box up from waist height over an obstacle for example)
though I do get a LITTLE annoyed every time I have to walk around the stupid floor mopping robot in my local stop & shop