Another major issue in this city, though, is visibility, what with all the tightly packed parallel parking, and streets (especially in the western half) just the perfectly wrong width for modern car A pillars. I would fully support shutting down dozens of streets that criss-cross the city to through traffic and dedicate them to biking and pedestrians. The bike lanes here (where people end up dying, regardless) piss me off to no end as much of time the city could have just given an entire street over to bikes a block away, rather than some of the most trafficked (by cars) thoroughfares, and everybody would be better off.
But another odd thing about SF is that pedestrians simply don't look. In every other major city I've lived or visited, in the US and around the world, the vast majority of pedestrians look before crossing a street. I've lived in SF for nearly 20 years and I can't get over how people just cross the streets--wide streets, busy streets, blind corners, etc--without a care in the world. It doesn't make it any less tragic, but... it's just so fscking bizarre. And I don't mean to excuse their deaths. Cars should be more careful, and they're definitely not--I'm wary of letting my children cross streets alone here, and I get honked regularly for not gunning it the moment a pedestrian crosses the center line when crossing. At the same time I find it very difficult to get too worked up when people blithely step in front of dump trucks (accident two weeks ago where even the city said there was absolutely nothing the city could have done to improve that intersection--the person just walked in front of the truck against every precaution).