Automatic platform gates

Automatic platform gates are chest-height sliding doors at the edge of railway platforms to prevent passengers from falling off the platform edge onto the railway tracks. Like full-height platform screen doors, these platform gates slide open or close simultaneously with the train doors.As compared to platform screen doors, these half-height platform gates are relatively cheaper to install as they require less metallic framework for support. As such, some railway operators may prefer such an option to improve safety at railway platforms and, at the same time, keeping costs low and non-air-conditioned platforms naturally-ventilated. These gates, however, are less effective, as compared to platform screen doors, in preventing people from jumping onto the tracks.
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