Platform screen doors 月台幕门
![](/Images/godic/202502/03/Lomonosovskaya_metrostaion-doors_open2823.JPG")
![Serangoon station. The Singapore MRT is the first in the world to be fitted with glass screen doors.](/Images/godic/202502/03/Ne12serangoon2823.jpg")
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![Fully-enclosed doors at Ecological District Station of Kaohsiung MRT in ******](/Images/godic/202502/03/Platform_screen_door_of_Ecological_District_Station2823.jpg")
Platform screen doors (PSDs) and platform edge doors (PEDs) at train or subway stations screen the platform from the train. They are a relatively new addition to many metro systems around the world, some having been retrofitted to established systems. They are widely used in newer Asian and European metro systems.