Stations that are planned or under construction. They are treated in a similar way to ghost stations
except that coefficients are 1.4 times the values they would be on a ghost station.
At present the proposed stations on the Docklands Light Railway extension are still in this category, as indeed are those which may or may not be proposed for the East London line should they ever get around to extending it. The most famous collection of foetals, of course, was the Jubilee Line Extension, although those are now standard stations.
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