Reference communal boundaries of Rennes Métropole (polylines)

It is one of the two reference layers of the municipal boundaries of Rennes Métropole. This layer of polylines is derived from the polygonal layer. It has been treated topologically so that there is only one line as a common boundary between two neighbouring municipalities. This layer extends over the municipalities beyond Rennes Métropole, in a rectangle encompassing. The municipal boundaries of the same municipalities were also subject to the topological correction. The layer was updated in 2022 in connection with the launch of the Single Cadastral Parcellar Representation.