What I remember about an Autostrade in Italy is multiple maximum speeds, i.e. 130 km/hr for cars, reduced to 110 km/hr when wet, reduced more when foggy, and trucks limited to 90 km/hr. And every lane had a different minimum speed, such as the 4 shown here: We saw considerable speed variations within the traffic, both high (in areas lacking speed cameras) and low. The Italians had vastly more tolerance for people driving at or lower than speed limit, over in the right lanes, than do numerous portions of the U.S.
We stayed off toll roads as much as possible; only got on them twice: once on the way from Florence, and another time approaching Rome. On 2 lane limited access roads people were far less tolerant than everywhere US, LA, Chicago, NYC, Atlanta, name it. With PSL 90kmh they were going 120, and getting diesel Fiat motivated from 90 to 110 to pass law obedient Germans was far beyond tolerance levels of Alfa and Audi owners. We got honked on many times. Surprisenly Rome was much better than it used to: no honking and we only saw finger sticked through the window once. And no we opted for public transportation there. There wasn't any parking and the ticket I checked on illegaly parked car was 130 euro, oauch! Driving 4 abreast on 3 lane road with few inches separating while talking on phone or putting makeup while pretending other car not there was pretty typical for Rome. The only thing.which kept under control was incredible low speeds. Many cars had multiple scars which name from walking speed contact