 The Romans under Marcus Agrippa established a network of roads in 20 AD radiating from the then capital of the Gauls at Lugdunum (Lyon), known collectively as Via Agrippa.From Lugdunum the road north passed towards Lutèce (Paris) following roughly the route of current RN 6, and southward towards Rome, skirting the Rhone and passing through Arausio (Orange) and following the edge of the Mediterranean, like the current RN 7.In the 15th century, with the creation of the royal post by Louis XI, a coherent network of roads was set up.