Trait d'Union (Hyphen): an outstanding project

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The Trait d'Union (Hyphen) project allowed the RATP (Paris Commuter Company) to simultaneously renew its stations' visual identity and improve the signage as well as the visibility of signboards.

To manage this impressive relooking, the RATP turned to GSDI in April 2015. As a result, thousands of colorful tiles now adorn the corridors, platforms, lobbies, counters, maps and vending machines of the parisian subway.


”We’ve standardised the reception codes: they are now more modern and consistent. Whereas, so far, there were many different colours in our stations, dominated by orange and green, the new adornment now highlights grey, white and jade green. With the coloured small bricks, which remind of the subway wall tiles, we make the link between the staff and the clients.” says Elisabeth Mathieu, RATP’s client relationship manager.


The outcome of this wide project that was spread both in space and time is particularly satisfying. It was officialy closed on December 15th, on the occasion of a reception at GSDI's headquarters in Massy, welcoming the RATP stakeholders to celebrate this realisation that continuously mobilized over a one year and a half period, a dozen of GSDI technician applicators.

Thanks to the know-how and adaptability of the laying teams, the tiles' application, the counters' lamination and the installation of "Hello!" and "Good Bye" dibonds pannels, completely fulfilled the expectations of the RATP.

This operation will definitely come to its end during the first quarter of 2017 and will be pursued by several other projects, including the visual harmonization of RATP bus stations.