San Francisco "cracking down" on cyclists?
http://www.huffingtonpost.com/2012/0...n_1519881.html
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Speaking at an event at the Commonwealth Club of California earlier this year, San Francisco Mayor Ed Lee said his office was working in a very deliberate way with SFPD to increase enforcement of vehicular safety issues at a number of problem intersections."
Maybe that's it. Or perhaps they had more recent inspiration for a crack down on red light running cyclists...