trafikledning
preferred label: traffic control @en
preferred label: liikenteenohjaus @fi
type: Concept
related: trafikljus

trafikmärken
preferred label: traffic sign @en
preferred label: liikennemerkit @fi
type: Concept
related: trafikljus

apparater
preferred label: devices @en
preferred label: laitteet @fi
type: Concept
narrower: trafikljus

trafikljus
related: trafikledning
related: trafikmärken
related: trafiksäkerhet
broader: apparater
preferred label: traffic lights @en
preferred label: liikennevalot @fi
in scheme: conceptscheme
type: Concept
broader generic: apparater

trafiksäkerhet
preferred label: traffic safety @en
preferred label: liikenneturvallisuus @fi
type: Concept
related: trafikljus