N-II was the former name for the Route Nacional from Madrid to Barcelona and France. According with the new spanish roads nomenclature, the sections which have been already enhanced and upgraded to autovía have been recently renamed to A-2, whereas the sections still not upgraded (Zaragoza-Fraga and Barcelona-french border sections) keep the old name N-II.

At the french border, near La Jonquera, this route links with the french N9

Most of the traffic formerly carried by the road now takes the AP-7 and AP-2 autopistas

The road is still in the process of being fully dualled but already by-passes the major towns of Girona and Figueres.