The Italian state railway company is called Trenitalia. In Latin, the trend is the meaning of the train. Its official website is www.trenitalia.com, the largest train operator in Italy, whether it is a high-speed rail or an intercity train or a very slow regional train. The color of Italian iron is usually the color of the Italian flag.
The price and speed of different models are not different. Take the journey from Rome to Naples as an example (one way). Leaving at noon on weekdays, the Red Arrow train (Frecciarossa) takes only 1 hour and 10 minutes. 25 euros for the second class or 58 euros for the first class. Then there is the InterCity train, which takes 2 hours and 13 minutes and costs 22 Euros (second class) or 29 euros (first class). Finally, there is a regional (Regionale, R; Regionale Veloce, RV) train that takes 2 hours and 34 minutes and costs only 10.50 euros (only one class).
Because the Arrow series trains are not only faster, but also more comfortable and cleaner, if we have a budget ok, they will be the preferred model for passengers. It is clearly the best choice when there are discounts on these trains. The sooner the ticket is booked, the lower the fare (Trenitalia can check the booking six months in advance).