Oslo subway to close 4 days in November for signaling system test

Oslo's subway operator Sporveien will close 63 of 101 stations, including all city-center stations, from November 19-22 to test a new signaling system and then switch back. Ruter warns of significant public transport disruption, with alternative bus services unable to fully replace subway capacity. This is a planned, short-term infrastructure disruption with no security implications.

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