Mexico City did. They did so for their PBS. I've heard Israel was going to, but don't know if they actually have done it yet.
I think Vancouver's PBS will underperform, but the authorities who are responsible for the helmet law won't admit it. If Vancouver's performance doesn't match Montreal's or Toronto's they'll say it won't be the law that's causing it, it'll be some other reason, any other reason than the helmet requirement.
I doubt very much the law will be repealed, or the PBS be granted an exemption because supporters of the law have wrapped up too much of their credibility in it to admit the law has been an impediment to cycling.
Last edited by closetbiker; 07-04-11 at 08:20 AM.