You know, this is one of the things I see drivers frequently do around here, as well as pedestrians (i.e. stop where they have a clear right of way, and proceed in places they don't). When I get this situation, I have a quick check to make sure it's safe, then blast straight through. There's no point messing around in these situations. I figure it's just people who haven't made up their mind what they intend to do at the intersection just yet.
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I am clinically insane. I am proud of it.
That is all.