The Fairbanks cyclist that "held" up traffic shouldn't have flipped off the motorist. That doesn't make friends. I ride with a rear view mirror and would've stopped and pulled over when I saw she was creating a hazard for other drivers even though I have a legal right to be there. 

The most dangerous thing that I see bike riders do is ride against traffic on bike paths that are only on one side of the road. Drivers should looked both ways before entering traffic. I've  seen bikes and pedestrians either hit or almost hit almost everyday. Never assume a driver sees you. They can look at you and not see you. I go behind the car unless it's obvious they see me by backing up to clear the way or waving me on. 

When a vehicle coming from a cross street assume they aren't going to stop. The way the trails are positioned so that it's not always obvious to a motorist they are about to cross a path. It's better to stop then be hit.