BPD issued a statement today:
So, if you're planning on stopping by 1325 Commonwealth Ave to check out the show, the Boston Police Department kindly asks you to be on your best behavior. Said Superintendent-in-Chief Daniel Linskey, "In a city as in rich in tradition and history as ours, it's always nice to honor and celebrate our own. We’re encouraging and expecting good behavior by all those who attend the free concert and we're certainly hoping people behave in such a way as to make our city and Aerosmith proud."
Police had no advice for commuters and Green Line riders who will be forced to find other ways to get where they're going for several hours (click on the link above to see the full list of road closures - it's more than just Comm. Ave.).