自じ動どう閉へい塞そく信しん号ごうMeaningsNoun1. automatic block signalKanji used自self動move閉closed塞blockage信belief号ID numberComposed of自じ動どうautomatic; intransitive verbNo-adjective閉へい塞そくblockage; blockade; blocking up; stoppage; obstruction; occlusionNoun信しん号ごうsignal; signalling; signaling; traffic light; traffic signalNoun