Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/4821002
Is Reference of Signal lights-en#Sense
Luces de señalización-es#Sense
Feux de signalisation-fr#Sense
Navigatielichten-nl#Sense
Signalleuchten-de#Sense
Φωτεινά σήματα-el#Sense