Paris metro line 4 fully embraces automation

New fully automatic metro for Line M4 in Paris Île-de-France Mobilités

Paris Metro Line 4 is now fully automated, marking a milestone in the modernisation of the city’s transportation network. Line 4 is the third Parisian line to be fully automatic, with lines 1 and 14. The project, completed on 17 December 2023, represents a forward-looking investment of approximately 480 million euros, entirely funded by Île-de-France Mobilités.

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Author: Emma Dailey

Emma Dailey is an editor at and

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Paris metro line 4 fully embraces automation |