Historically they did only show the next destination and sometimes the type of train. On larger stations the train porters would help passengers to board the correct train matching with their ticket. Please help improve this article by adding citations to reliable sources. A platform display , destination display or train describer British English is supplementing the destination sign on arriving trains giving passengers an advance information. This article needs additional citations for verification. The mechanical types were not standardized and every station had its own range of facilities as they seemed useful. Different directions would then be called out on the platform. The topic of this article may not meet Wikipedia's notability guidelines for products and services. A train describer is originally an additional apparatus at British railways that ensures that the identity of each train is displayed on the signalbox panel together with the indication of that train's presence, usually offering routing information.
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