The construction of a suburban line along the LGV between Villeparisis and Vémars is under consideration. This project could have two possible purposes: to serve Roissy airport from Paris (as an alternative to the CDG Express); or to be the beginning of a western line linking Creil to Meaux, Marne-la-Vallée and Melun.
It has also been proposed to complement the Interconnexion Est with an LGV Interconnexion Sud or LGV Interconnexion Ouest.
In November 2010, RFF began formal studies of a link from the Interconnexion Est to the Paris - Creil - Amiens line.[1]