予よ告こく信しん号ごうMeaningsNoun1. advance warning of a traffic signal; preliminary traffic signalKanji used予in advance告reveal信belief号ID numberComposed of予よ告こく(advance) notice; preliminary announcement; warning; trailer (for a film, TV show, etc.)Noun信しん号ごうsignal; signalling; signaling; traffic light; traffic signalNoun