Views Read Edit View history. Please help to establish notability by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. In other projects Wikimedia Commons. The train handling became optimized to allow for less than a minute from arrival to departure at a stop which triggered the usage of loudspeakers and platform displays. In later usage they were replaced by passenger information display systems PIDS allowing for real-time passenger information. From Wikipedia, the free encyclopedia. A series of interconnected signal boxes form a train describer system TDS transferring train describer data to be shown on the respective signalbox panel in a train describer display. The first railway stations had only a time table for passenger information. This article has multiple issues.