Most US states can't split lanes, I'm guessing that's why you mean by "filter up". Even though the other lanes were empty I guess he just wasn't in a rush.+1
Although it looks clear left and right, not sure why he stopped?
In the UK we filter up the sides if it is a turning, I hate stopping/becoming sandwich filler between cars.
People are idiots. The stuff I see sometimes :nonoI dont understand how that happens. Do people really not pay attention that much? Its really not that hard to keep your eyes on the road.