A4 & A50: missing a graph connection
A12 & SS1: the designation change near Cecina is not at SS68, it's a km or so north of there. Where OSM shows the road change from trunk to motorway. I'd also combine SS1Liv with this SS1 as an implied concurrency.
A25: SP656Dir -> SS656Dir
RA12: needs to be truncated to SS714, the road past there is only SS16Dir
SS1Liv: needs a point at the A12Liv ramps
SS258: missing route, need to add.
SS714DirFra: could use a point at Contrada Ceretto (I got off A14 but then turned off here)