"Bicycles will be removed" - legal?

Perhaps the way to deal with this is like the "right to roam" legislation. Lobby MPs to make law so that any railings fronting on a public space, with no danger of obstruction, are deemed by law to be bike parking. The MPs get green brownie (greenie?) points at no cost to the govenment - they like that.

I like this idea, how do we go about it.