Roman Question Of The Day: What Does This Street Sign Warn Could Happen To You?

We are in our second day in Rome and having a ball. After a morning of church and crypt visits, we are about to join an arranged tour of the Vatican. However, one unnerving sign outside of the hotel stood out.

It appears that you can just be sucked into the Roman streets. That explains the catacombs we visited this morning full of stacked human bones. Alternatively, as the home of the Vatican, it could be a warning about your eternal soul and the pull of the demonio to the repose of the damned. I am not sure whether to grab a rope line or a prayer book before crossing.