Italian Speed Limit Signs. I'm Confused

This isn’t quite American but it has an American wondering. I’ve noted the speed limit signs (I assume thats what the are) on Italian railways that appearently give 3 different limits. The signs are rather large, black, caneted somewhat,like a MILW hearald, and have white numerals on them. Three are stacked vertically on a pole, one under the other. An example would read from top to bottom 110, 115, and 120 on the lowest one. Anyone know what class trains these are for?

Normally it is freight (lowest speed), Passenger (middle), Tilting (Pendelino)(highest speed).

That’s reasonable to me. Apparently, in the USA, the roads make certain the engineers know which signs applies to them by adding P and F (where there are two different restrictions). I do not recall seeing any on the NE Corridor, where there would be three restrictions.

Thanks guys. I pretty much figured out one was frieght and the other passenger, but the third stumped me. I never even thought of pendelino.