years earlier, the RATP decided that such doors must be built as crowding increases so that passengers cannot fall off the platform; to do this, the agency recruited the Kaba Group to perform automation and installation on Lines 1 and 13. The company uses the ClearSy security system to control door opening and closing. However, the new platform screen doors are not the same as the prototypes installed at Invalides. On 29 December 2009, the RATP announced that Miromesnil would be the first of twelve stations to be equipped with these doors and that work would begin in June 2010, finishing three months later. After that, the following stations will receive platform screen doors: Saint-Lazare, Champs-Élysées – Clemenceau, Basilique de Saint-Denis, Saint-Denis – Porte de Paris, Invalides (replacement), Varenne, Saint-François-Xavier, Duroc, Liège, Montparnasse-Bienvenüe, and Place de Clichy. Line 14 extension north Various solutions were investigated to enhance capacity on line 13, including splitting the line in two (a 13bis line), extending line 14 to La Fourche and have it take over a branch from Line 13, or extending line 14 to Porte de Clichy and Mairie de Saint-Ouen providing an express link to Saint-Lazare and downtown as well as a direct connection between the suburbs Clichy and Saint-Ouen. The last solution was the one that was adopted, and the extension of line 14 to Mairie de Saint-Ouen opened in December 2020. According to Île-de-France Mobilités, this extension has removed 19 to 27% of peak hour traffic from line 13. Automation In December 2022, Île-de-France Mobilités and RATP announced that the line would be fully automated by 2035, becoming the 3rd metro line in Paris to be converted to unattended train operation after Line 1 and Line 4. The line will be modernised in two phases - the introduction of the new trains (MF 19) from 2027, followed by the automation of the line in the early 2030s. The automation of the line itself is estimated to cost around €837m. Future extensions After the northwestern branch was extended by with two more stations, Les Agnettes and Les Courtilles, a further extension with a third station (Port de Gennevilliers) will be added later. Route Enhancements The trains on Line 13 were refurbished in the 2000s, and the first refitted train entered service in January 2007. These refitted trains have new features such as automatic displays and announcements, which are now added to