Transplants complaining about how they're better drivers than native PNWers gets pretty old after a very short while. Apparently winter weather driving accidents never happen anywhere else in the country.
There's just so much shit going on on the roads, compared to the east coast. They're little things here and there, but I found myself completely unable to drive on "autopilot." Nothing is intuitive; there's gotchas everywhere. Either there's an absolute bombardment of road markings and signs, or there's none at all (so you're either completely overloaded with information, or you don't have enough).
For example: you have bikelanes that merge into the center lane from the outside (without any strong indication, so I always assume the right-hand lane is disappearing -- but no, it's still there, so you always miss the turn). You have the absolute mess of highways that exit off into major stroads (!). Everything is so densely-populated that it's impossible to figure out where exactly you are, because there's so much going on.
It's like too much thought was put into road planning. There's too much shit going on.