No, it’s talking about crew scheduling/allocation , not signaling. The signaling... | Hacker News

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TylerE on April 4, 2022 | parent | context | favorite | on: Due to failure in the IT system, it is not possibl...

No, it’s talking about crew scheduling/allocation , not signaling.

The signaling system is totally fail safe. Even if that system totally went out, drivers are required to know where all the signals are, and to treat an unlit signal as a red.

throwawayboise on April 4, 2022 [–]

What if the failure lit all the signals in green?

TylerE on April 4, 2022 | [–]

It can’t, they’re not wired like that. They’re engineered so any fault shows either red or nothing.

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