Why the Circle Line is a dead end siding – but Antrim-Lisburn-Belfast trains can’t be lost

The Circle Line sounds like a great idea.  Go either direction according to your needs,  with a total journey time of 90 minutes or so, you’re no more than 45 minutes from anywhere on it. However, picking up on my comment on Jay’s article, there are certain logistical barriers that mean it is a non-starter in its proposed form. The key assumption I will make in this piece is that the line from Antrim-Monkstown is doubled, including the total reconstruction …

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