Paris Metro Line 4

Paris Metro Line 4 is a north-south trunk line, starting from Porte de Clignancourt in the north to Bagneux–Lucie Aubrac in the south, and has achieved fully automated operation.

Updated 2026-10-28 · rev 7

Profile

Concept kind: Metro line
Opened: April 21, 1908
Length: Approximately 14 kilometers
Termini: Porte de Clignancourt ↔ Bagneux–Lucie Aubrac
Structure: Underground (outdoor crossing over the Seine between Cité and Saint-Michel)
Maximum speed: 70 km/h
Status: In operation
Operator: RATP
Owner: RATP
Rolling stock: MP14

Overview

Line 4 is the first north-south line of the Paris Metro, opened in 1908 between Châtelet and Porte de Clignancourt. It runs through the core of Paris and crosses the Seine River above ground between Cité and Saint-Michel ^[wiki?].

History

1908: Châtelet–Porte de Clignancourt section opened; 1909: extended south to Porte d'Orléans;
2013: extended to Mairie de Montrouge; 2022: extended to Bagneux–Lucie Aubrac;
Early 2020s: fully automated, using MP14 trains ^[wiki?].

Major Stations

Porte de Clignancourt, Paris North Station, Paris East Station, Strasbourg–Saint-Denis, Châtelet, Saint-Michel, Odéon, Saint-Germain-des-Prés, Paris Montparnasse Station, Denfert-Rochereau, Porte d'Orléans, Mairie de Montrouge, Bagneux–Lucie Aubrac.

Operation

Operator: RATP ^[2]
Rolling Stock: MP14 (rubber-tired), fully automated
Service Hours: approximately 5:30 AM–1:15 AM the next day

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