Heres a great article about this exact topic. In short, because NYC is denser than London with more happening above ground, it was more helpful to see exactly

Heres a great article about this exact topic. In short, because NYC is denser than London with more happening above ground, it was more helpful to see exactly where the stops were going to let you out, vs being easier to read. https://www.nytimes.com/2012/08/06/arts/design/the-subway-map-that-rattled-new-yorkers.html https://www.nytimes.com/2012/08/06/arts/design/the-subway-ma...