Me myself maybe the only one here who used Roman Roads for effective travel. I bicycled from Finland to Yugoslavia in 1971. Roads were often just mud for tanks and lorries. But sometimes I found small roads with flat stones. Especially I remember the road between Ljubjana and Udine. There was quite wide road sections in the middle of nowhere completely paved with stones. This was the Main Roman Highway between EMONA and AQUILEIA says the map (https://imperium.ahlfeldt.se/index.php?id=10717). I truly wondered who the hell has built this road, because I did not know shit about any Romans.