Signals in Store Aisles

I am reviewing a proposal to install customer guidance systems (CGS) in larger stores. Basically this means signals and stop signs where aisles meet to prevent people from running into one another. Great idea I think.

I witnessed a near collision the other day in a Walmart between a very focused wheel chair person and an intent motorized shopping cart driver. Visions of personal injury, lawsuits, and people impoverished or bankrupt from the ensuing medical bills. How can America not afford to implement these CGS's in every major store in the land? A guidance system will certainly cut down on the near misses at major aisles and all of the repercussions. 

I guess you know how I will vote.