Signed.

An alternate approach could be setting up a 30 inch wide strip in the middle of the aisles for movement only - as in, if you are not going somewhere get out of the aisle.

There's already a rule about wearing safety glasses, adding an aisle seems reasonable.

Making the aisles one-way for robots and the other way for people would also be good. If robot traffic comes from only one direction and people are facing it (and wrong way robot draggers called on it) traffic should move along.

Or perhaps we can start yelling HUMAN!

Dave S.