23:30 pm, in the metro, north of line 4 (Bagneux-Porte-de-Clignancourt). One of the driverless shuttles – currently being deployed on the line, whose full automation should take place in early 2024 – has suddenly become "mute". It no longer communicates with the autopilot system! As a safety measure, the power supply is instantly cut off on the north of the line, and all trains running there come to a standstill.
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