I can't see the problem with it personally. The only thing that I can put it down to is that people these days generally seem to be on a tighter timescale, and I'm guessing that the complaints have come from people feeling that the people with the sandwich boards are in their way.
It's a mad world out there! Pretty petty if you ask me, and the next thing you'll see banned associated with this is people with religious boards. (in my opinion.)
International Level: Activist / Political Participation: 29 2.9%
I kinda like seeing a person walking about with a sandwich board or dressed in a costume to help drum up business for their joint. TO outlaw this is very petty. I guess the ME ME ME attitude that most seem to have can not be bothered to side step a ad. What is next? Maybe the trash cans need to go and the post boxes because they are in the way too.