Itinerarium!

[Larb]

Do you mean those maps that are visually just drawn as a long road, with the stuff along it and the routes branching off?
If so I recall John Ogilby doing similar style maps in the 16th century. I don't know about the Roman style ones, but his road atlas type maps might be worth looking at. I have always considered handing my players an in-game map in that style rather than a proper accurate one. =P


I think mostly you'd see inns and places for travellers to stay at, as well as major religious sites and landmarks. Things of particular note would be on there I think with a few notes about them. Maybe even a comment or two about the disposition of a certain settlement, true or not (which leads to such a place earning a reputation).

If it's a Roman style society, it'll definately have those big inns on there that official travellers used. If it has an efficient postal system with riders, might have the changing stations or whatever, where horses are swapped or shod. Military stuff might including sites for marching camps.