The designated area of Taipei Main Station is located in the transportation hub of the city. There are 4 transportation lines: High Speed Rail, Taiwan Railway, MRT Danshui Line, and MRT Bannan Line. There are also 4 underground streets, including Taipei, Station Front, Zhongshan, and K District (managed by different agencies). Each entrance and exit index of a specific area is mainly divided into three ways: color, symbol, and number. Guide maps are posted at the entrances and exits, and people are welcome to use them. The distinguishing principles of entrances and exits are as follows:
1. Taipei Underground Street: Yellow, the symbol is Y, and its coding principle is that an odd number on the north side and an even number on the south side, numbered in sequence from east to west, including Y1 to Y28.
2. The underground street in front of the station: pink, the symbol is Z, the coding principle is the odd number on the north side and the even number on the south side, numbered in sequence from east to west, including Z1 to Z10.