At 7th and H NW there are three giant electronic billboards that play sound, not to mention the array of billboards plastered all over the Verizon center.
I mentioned those, but you're right that they're inconsistent with what I said about people not leaving NW. 2006-ish I think there was a big debate on if they'd be allowed ... they've always seemed like a special case, being part of the arena itself. In any case, billboards are few and far between in NW.
At 7th and H NW there are three giant electronic billboards that play sound, not to mention the array of billboards plastered all over the Verizon center.