Road conditions? Most are pretty shitty. From my experience from the East Bay: 880 is a total shit show to ride on (traffic AND road conditions) 580 is okay, except for when it gets packed at any of the interchanges. 680 isn't too bad. From driving not riding, the SF highways are REALLY crappy conditions, along with some of their streets. BE CAREFUL with muni tracks in SF ESPECIALLY during rainy season, winter time pops up a bunch of threads of people going down due to wet tracks. Take this and everything else Idioteque said and I think you are golden.