http://www.boston.com/news/local/articles/2004/05/21/massive_closing_of_roads_set_for_convention_week/
..because there's so much fear, it's out of control and people who make these decisions are acting extremely irrational.. read for yourself.
all i know is i'm staying as far away from Boston as possible, it's gonna be a traffic nightmare.
even with the "big dig", it's gonna be worse than before.