it's normal for a train to be made up of multiple independent units[1], which ar... | Hacker News

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blibble on July 4, 2018 | parent | context | favorite | on: The Dangers of Train Yards, Through the Eyes of Ra...

it's normal for a train to be made up of multiple independent units[1], which are then coupled together to make a longer service

each unit has two cabs (one at each end)

a common configuration is a 12 coach train made up of 3 x 4-long-units, which would have 6 cabs

that's a lot of upgrading

[1]: http://extra.southernelectric.org.uk/news/southern/img/colin...

[2]: http://extra.southernelectric.org.uk/news/southern/img/colin...

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