For many people, a map of a transportation network is a given, an expected part of the system, something that just is — like a fire-escape plan in a building. So, when I say that I design transportation maps, they don’t understand. What is there to design even?

Well, let’s take the London underground map as an example. Designed by Harry Beck, it was the world’s first transportation map to use the principles of electrical circuit drawings. All line segments were put to the angles of 45 or 90 degrees. The distances between stations were equalized.

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