Via Aemilia
Furthermore, the features of the present-day Rubicon river (north–south course, orthogonal to the Via Aemilia) and the Via Aemilia itself (a straight reach before and after the crossing, and a turn just passing by , so marking a possible administrative boundary) are common to typical geographical oriented limits of Roman age, being what made this a clue of actual identification of the present-day Rubicon River with the Fiumicino.