轨道数标志
/ˈnʌmbəɹ ɒv ˈtɹaks ˈsaɪn/
n
English: number of tracks sign · 轨道数标志
English · number of tracks signEspañol · letrero de número de víasFrançais · panneau nombre de voies
释义：Sign that displays the number of tracks the road crosses.