3. Functional classification of national roads

The classification of roads according to functional criteria has only been established for the national network (national roads and freeways under concession from the State). The corresponding texts may inspire other local authorities (départements and communes), but are not binding on them.

• Interurban roads

  From a functional point of view, the classification of interurban roads was defined in 1991 by the "catalog of interurban road types". , then specified by "ARP, main road development".