1,4:2 Sitifi

Sometimes in the TP a self-evident absurdity, such as the unlikelihood that two neighboring stations would be connected by two parallel roads, leads us to investigate and solve a routing problem. This happens in the line-work near Setif (Sitifi), where both the blue and the yellow road re-unite at the next station to the right. This cannot be right.

No additional arterial routes need to be added: we simply need to correct the strokes that are already present. The emendation that I would propose is marked by dotted, red lines in drawing below, so that the yellow road leads from Sitifi to Zaras and onwards to Ad Centenarium. There it meets a second corrected road arriving from Ad Capsum Juliani.

This strange mis-wiring suggests that the model on which our twelfth-century manuscript relies, immediately or via an intermediate manuscript, had not only irredeemably lost its leftmost sheet or sheets, as Talbert demonstrates, but had also suffered rotting or fraying during storage or transport at a vulnerable outer edge of the tightly closed roll, making the Setif area tattered and illegible.