Table 4 Roman roads and current infrastructure: correlations

From: When History Leaves a Mark: A New Measure of Roman Roads

  Roman roads
  All Major Certain
NUTS 3 level
   Motorways 0.514* 0.669* 0.625*
   Railways 0.598* 0.670* 0.632*
NUTS 3 level, density
   Motorways 0.241* 0.526* 0.394*
   Railways 0.314* 0.498* 0.408*
  1. Asterisks denote 5% significance level
  2. Source: Author’s elaboration from own data, from Istat data and from Automobile Club d’Italia (ACI) data