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eschlerc t1_ir9z0r1 wrote

It sounds like they're upgrading signaling on the Red Line. My speculation is that the northbound signals are temporarily out of service for maintenance, so all trains are required to proceed with caution, usually 15 mph on American railways.

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andr_wr t1_isi09kj wrote

That's an interesting hypothesis. Almost 4 weeks of outage though?

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