Simulations illuminate the path to post-event traffic flow

Fifteen minutes. That’s how long it took to empty the Colosseum, an engineering marvel that’s still standing as the largest amphitheater in the world. Two thousand years later, this design continues to work well to move enormous crowds out of sporting and entertainment venues.

But of course, exiting the arena is only the first step. Next, people must navigate the traffic that builds up in the surrounding streets. …

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