1,4:1 Agetincum

This easily explicable muddle eluded Miller's sharp eye and has not as far as I know been examined elsewhere. That a Roman high road reached Sens from Auxerre and the southwest and then proceeded down the Seine valley has been convincingly demonstrated by Pierre Nouvel from recent archaeological evidence.

The itinerary employed by the chart-maker would have run (northwestwards): Autessiodurum - Bonaritum - Agedincum - Condate - Metolosedum - Lutetia.

The emended blue line shows how this was originally joined up. The red line represents a spur (perhaps only a cross-country mule track) from Agedincum (Sens) to Aquae Segitae, Ad Fines and Cenabum (Orléans). The yellow line is another spur (probably an engineered road) from Agedincum to the unlocated Riobe, the known site of Calagum, unfound Fixtuinum and arriving at Augustomagus. As scribed, it seems quite implausible: the fork at Calagum not only goes against the TP repertoire of signs, but also has no match in reality, while the chicane to the right of Riobe kinks in the wrong direction and has no label to it. My emendation therefore suppresses these.

It would appear that the scribe has accidentally shifted a four-way junction at Agetincum higher up the page to Riobe. The erroneous result vaguely resembles the correct model and failed to be noticed during the scriptorium correction process. It remains uncertain where the road to Bebe departed from at left. Perhaps it is a branch of the highway drawn above it.

Nouvel, Pierre. ‘Les voies romaines en Bourgogne antique: le cas de la voie dite de l’Océan attribuée à Agrippa’. In Voies de communications des temps gallo-romains au XXème siècle, edited by C Corbin, 9–57. Saulieu, France: Amis du vieux Saulieu, 2012. Online.