Historical road networks in Europe: Shapefiles including the correct geometry and speed of the European road networks from 1960.
Methodological description and application in:
Condeço-Melhorado, A. M., Christidis, P., & Dijkstra, L. (2015). Travel speed changes along the European core road network for the period 1960–2030: An application of octilinear cartograms. Journal of Maps, (November), 1–4. doi:10.1080/17445647.2015.1088482 doi: 10.1080/17445647.2015.1088482
Three classes of roads (1,2,3), class 1 being highways. Six time periods: 2012, 2000, 1990, 1980, 1970 and 1955
Field NCLASS_xxx is the class of the road in each year (last xxx digits)
Travel time is the time (in minutes) to travel the distance (shape_length, in meters) at the speed of the class the road has in 2012.