It's a good point...if bikes are vehicles (and in Arkansas, they are), then it's unsafe to pass anything without going into the next lane. That means drivers have to wait until the the other lane is clear of oncoming vehicles and they can see far enough ahead to determine that. It doesn't always make sense for cars to wait for there to be a single yellow line, but technically, they're supposed to. (I pass tractors all the time on double yellow, if I can see ahead and it's moving slow enough.)

Karen