The operation consists of continuing the development of the ViaRhôna route in the municipality of Thonon les Bains through the construction of 1.660 km of double-way green road over the period 2018 to 2020. This development is also part of the global Sud Léman cycling programme, the tourism plan 2013-2020 of the Departmental Council of Haute Savoie and more broadly Eurovéloroute17.