Passenger services commence on Paris Metro Line 14 extension to Mairie de Saint-Ouen, France December 14, 2020 | Europe News Passenger services have commenced on Paris Metro Line 14 extension connecting Saint-Lazare to Mairie de Saint-Ouen. The extension project included the construction of 5.8 km of new line and four new s... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password