Did you notice that the first and last half-height platform screen doors are different? The half-height Platform Screen Doors (PSDs) were installed onto elevated MRT stations along the North-South Line (NSL) and East-West Line (EWL) between August 2009 and June 2012. All of the 24 doors along the platform might look the same, but the … Continue reading Fun Fact Friday: Asymmetrical Half-Height Platform Screen Doors