由于地面交通已趋于饱和,因而高架和地下轨道交通被不断开发。目前,日本有地下铁的城市共9个。按开通的顺序排列,它们分别是东京、大阪、名古屋、神户、札幌、横滨、京都,福冈和仙台。与世界各国有地铁的大城市一样,日本这些城市也都有各自的地铁标记。它既代表了该城市地铁这项交通工程,也具有指示地铁出入口位置及有关建筑的功能。下面分别予以介绍。东京地铁由帝都高速度交通营团(简称“营团”)东京都交通局(简称“都营”)经营。现行的“营团”标记是1961年3月制定的(见图1),它既是英文地铁(subway)的词首字母 S,又是交通系统必不可缺的四要素:安全(safety)、可靠 As surface transport has become saturated, elevated and underground rail traffic is continuously developed. At present, Japan has a total of 9 metro cities. They are Tokyo, Osaka, Nagoya, Kobe, Sapporo, Yokohama, Kyoto, Fukuoka and Sendai. Like the big cities in the world where there are metros, these cities in Japan also have their own subway markings. It represents both the metro project and the functions of the subway entrances and exits and related buildings. The following were introduced. The Tokyo Metro is operated by the Tokyo Metropolitan Transportation Authority (“DMD”), the Royal High Speed ​​Transportation Corps (“UCG”) for short. The current “Battalion” tag was established in March 1961 (see Figure 1). It is not only the initial letter S of the English subway, but also an indispensable element of the transportation system: safety, ,reliable