The average roughness is the area between the roughness profile and its mean line, or the integral of the absolute value of the roughness profile height over the evaluation length. Rz: Rz is the arithmetic mean value of the single roughness depths of consecutive sampling lengths.
Â© Archivio Audiovisivi Gruppo FS Italiane. In a city renowned for its traffic, we present the Leonardo Express. This non-stop First Class rail service from Leonardo da Vinci Airport, also known as Rome Fiumicino Airport, goes to Romeâs Termini train station in the heart of downtown.
Frequent Trains from Rome to Turin. Trenitalia's high-speed Alta VelocitÃ  (AV) trains cover the roughly 450-mile (724-km) distance (as the rail lines go) from Rome's Termini station to Turin's Porta Nuova station in 4 to 4.5 hours. Trains leave Rome bound for Turin once per hour during most weekdays, for a total of 45 trains making the trip per day. The first leaves Rome at 6 a.m., the last at 7 p.m., and ticket prices on this route range from $47-141.