In message ,
Steve Lewis wrote:
I reckon that the District line is of the maximum complexity that can
be covered by a single line identity. The expanded London Overground is
now way beyond that level of complexity, and is crying out for a range
of line identities.

Try looking at T1 and T2 on the Sydney network.

Imagine being on the platform at Chatswood when a Epping train is
announced and you want to go there.

And as for identifying the first train to the airport from Town Hall ...

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Clive D.W. Feather | Home:
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