> even then it's effectively suicide to try and use certain bike lanes and everyone just has this communal knowledge. As a lifelong city biker, I am curious wh

> even then it's effectively suicide to try and use certain bike lanes and everyone just has this communal knowledge. As a lifelong city biker, I am curious what exactly you are talking about. Certainly, there are some roads where you're more likely to be hooked by someone turning on right (Market St in SF comes to mind), but not a "no go zone"?