business news in context, analysis with attitude

The Federal Highway Administration recently mandated that states should stop using funny and irreverent messaging on their electronic signs.  (Like, "Tailgating Is for Football Not Highways.")  They want messages to be simple, brief and clear, without secondary meanings or pop culture references.  (Like, "Aggressive driving is a path to the dark side."). I understand the rationale, but I think it could be a mistake.  Either way, there is a lesson here for retailers.