In the aggregate, our model simulations make it possible to reconfigure conventional maps of the Roman Empire to express the relative cost of transfers from or to a central point as distance. This perspective captures the structural properties of the imperial system as a whole by identifying the relative position of particular elements of the network and illustrating the impact of travel speed and especially transport prices on overall connectivity. Distance cartograms show that due to massive cost differences between aquatic and terrestrial modes of transport, peripheries were far more remote from the center in terms of price than in terms of time. Due to an unexpectedly high volume of traffic to the site, performance of the routing map and interactive cartogram are not what they should be. If you experience delays performing route calculations or rendering the map, you can try refreshing the map by zooming in or out.
Related: Mappe storiche