Rome beginning of the 2nd Century AD. The center of the Empire is the heart of a rich network of trade exchanges. Under the emperor Trajan in ancient Rome traffic was a considerable urban problem. Hundreds of wagons along the roads carried goods from Portus-Ostia headed for Rome`s market-places and forums. Manufactured products were transported from the Urbe to the ports. The best mercatores moved the quickest through the traffic jam making the most business along the Strada Romana.