If this bill becomes a law, then you'll be seeing scary "Photo Enforced" signs popping up around this intersection in a year or so. It will look a little something like this crudely Photoshopped image. Get up to speed on this issue by clicking here or here or here or here or here or here or here or here. Other coverage is here and here. Keep up to speed by checking out the San Francisco Bicycle Coalition website.
Let's stay safe out there!