Developers are using those figures to create interesting apps, such as Matthew Somerville's live train map for the London Underground.

开发者正在利用这些数据创造一系列有趣的应用程序，如马修·萨默维尔(Matthew Somerville)就为伦敦地铁系统开发了一套实时铁路地图。

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He says the display was designed to look like a map of the local Washington Metro train system instead of a tree.

VOA: special.2009.12.01

At first these display table numbers, but once the train departs they show a constantly updating route map, interrupted by carefully timed bursts of music and video that match an attraction appearing alongside the train.

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He can draft a contract, train a falcon, draw a map, stop a street fight, furnish a house and fix a jury.

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Mr Beck was notably ahead of the game in producing a version of his London map showing all underground and surface level train services as early as 1938.

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