In article , James Farrar
writes
- The standard should be 6 tph, not 4
- There should also not be a gap of more than 12 minutes between
successive trains
- The map should cover the whole of London, including relevant parts of
the tube network

Which would be pretty much all of it, apart from maybe the Chigwell
branch of the Northern line and parts of the Met, right?

The Northern Line goes to Chigwell?

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