I just want to shout out WalkSF which is a small organization punching well above its weight fighting for increased safety for pedestrians (which by proxy will mean increased safety for everyone). Voters in San Francisco overwhelmingly chose to maintain the JFK promenade vehicle closure in spite of very noisy complaints from a small minority of car owners. There are many uphill battles, but calmer, safer streets are popular with a solid majority of residents and I think politicians will start realizing that this will be a winning issue for them. It won't happen overnight, but I do think there is cause for optimism.