Lenght of railway lines with double and more tracks

Lombardy is the top region by length of railway lines with double and more tracks in Italy. As of 2015, length of railway lines with double and more tracks in Lombardy was 793 kilometres that accounts for 21.95% of Italy's length of railway lines with double and more tracks. The top 5 regions (others are Piedmont, Campania, Apulia, and Liguria) account for 81.37% of it. Italy's total length of railway lines with double and more tracks was estimated at 3,612 kilometres in 2015.