gtfs:direction_id leaf node

@prefix gtfs: <http://ontology.gtfs.org/reference#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

gtfs:direction_id a rdf:Property ;
    rdfs:label "direction_id"@en,
        "id_direccion"@es,
        "id_direcao"@pt ;
    rdfs:comment "Indicates the direction of travel for a trip."@en,
        "Indica la dirección del viaje."@es,
        "Indica a direção da viagem."@pt ;
    rdfs:domain gtfs:Trip ;
    rdfs:range xsd:integer .