The major issue (fortunately I'd add) is the foolproof "Tutor" and "Vergilius" camera system, operated since 2008.
The one and only ultimate tool to finally force Italians to slow down on highways and drastically helping to slash the amount of fatal road accidents, now well below the European average.

It calculates the average speed between two points, not just the instantaneous speed, and there's no way to go around it.
Fines are steep and are calculated on the excess of 0-10 km/h, 10-40 km/h, 40-60 km/h, +60 km/h, including demerit points and withdrawal of licence.
An instrumental tolerance of 5% is deducted.