Sometimes it's hard to visualize the dangerous areas, since here in California, at least in my area, most bike lanes are fairly wide. We do have some where cars are parked next tot he curb, but the lane is then just about 6 feet out from the cars. We do have the exception written into the law that says we can go outside the bike lane if it's dangerous. I believe we can also ride on the freeways unless it's specifically marked. The intersections seem kind of crazy though. When they paint the lanes, I don't think they end them far enough back from the intersection for us to maneuver properly if we stay in them.