Development plan (2013)
EPA
Plaine de France, Roissy Porte de France and the City of
Goussainville have commissioned the French firms Arval and
Engineering TUGEC for a study to carry out an overall development
scheme of "Roissy Carex" zone.
The project included: 
- The implementation of the multimodal freight platform along the RD317
road in frontof airport runways over an area of about 75
hectares, 
- An area of economic activities deployed on
approximately 21 hectares along the RD47 road converted into a
metropolitan corridor with a Common Transit Transportation Network. It
includes a "Showroom" area located at the entrance to the
site, a "small business" and finally a general activity
sector in connextion with the Carex platform 
- A large landscaped
park on wildlands of Vallée du Croult and large mounds of Bois du
Seigneur. 
The study describes the overall programming of the
site "Carex" identifying operational zoning and a
development phasing.