Great question, I have yet to discover the safety of the bike lanes spread around here but local cyclists I've talked to feel comfortable cycling on the semi-pr

Great question, I have yet to discover the safety of the bike lanes spread around here but local cyclists I've talked to feel comfortable cycling on the semi-protected bike lanes on main roads here because they're so wide. I admit, the fully protected bike lanes that have recently come up on Embarcadero with concrete barriers had me excited for my safety, until I had to deal with the grime and odd person jumping in the bike lane randomly (Generally mentally ill folks). As far as biking infrastructure, if you ignore the other problems, SF has really stepped up its game, mostly due to the effort by the SF Cycling coalitions, I believe (And a number of cycling related deaths).