Geographic Data Files (GDF) is the standard used for road data modeling, especially in vehicle navigation systems. A huge amount of road data has been described according to this standard, first of all by the two digital road map providers, NavTech and TeleAtlas.

The Swiss road maintenance services use the STRADA database to manage road maintenance. Thus, they describe the properties of federal or cantonal roads, their actual state and the interventions to come on certain road section.

One should analyze the potential combination of the two, often complementary, data sources, and that form the technical, legal and organizational point of view. Information concerning building sites on highways, treated by maintenance services, could interest the road user; the data on communal roads contained in GDF databases could be useful for the toad maintenance services and so on.