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A comment on London tube map made from a working circuit board. Parent comment
I seem to recall the actual control centres used to use a big map with the train lines drawn using a line of bulbs, and indicating trains buy a series of bulbs. Similar to this, http://photos.signalling.org/_datas/o/n/d/ondcx12zxd/i/uploa... .
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I seem to recall the actual control centres used to use a big map with the train lines drawn using a line of bulbs, and indicating trains buy a series of bulbs. Similar to this, http://photos.signalling.org/_datas/o/n/d/ondcx12zxd/i/uploa... .