(3) Metros, trams, tram-trains and other light rail systems are subject in many Member States to local or regional safety rules and are often supervised by local or regional authorities and not covered by the requirements for interoperability or licensing within the Union.
(3) Metro’s, trams, tramtreinen en lightrailsystemen vallen in veel lidstaten onder lokale of regionale veiligheidsvoorschriften en onder het toezicht van lokale of regionale instanties; de eisen inzake interoperabiliteit of vergunningverlening in de Unie zijn op dergelijke systemen niet van toepassing.