Figure 1

The grey area corresponds to the Rimini municipality, whose linear extension of the coast is ≃25 km (the spatial scale is reported on the left bottom angle) and the vertical axis is oriented along the North. The red dots show the distribution of the GPS mobile phone data set recorded in the considered area. We observe a concentration of points inside the urban settlements (in particular along the Adriatic sea coast Rimini and Riccione are the main cities), and along the main country roads. A small town (Santarcangelo di Romagna) is also visible in the inland on the left. The blue line corresponds to the railway that is a natural border between the coastal area, where most of the tourist activities are located, and the inland