https://www.sick.com/br/en/the-platform-screen-doors-on-the-seoul-metro-are-monitored-by-2d-laser-scanners/w/blog-2d-laser-scanner-seoul-metro
The 2D LiDAR sensor TiM351 from SICK monitors the automated platform screen doors on the Seoul Metro
platform screen doorsseoul metromonitored
https://www.phillymag.com/city/2015/01/13/platform-screen-doors-septa-el-broad-steet-line-orange-blue/
Glass doors on El and Broad Street Line platforms would be paid for by a Korean company looking to move into the U.S. market. They offer several advantages.
platform screen doorsseptasubwaylines