It runs from Panevėžys, through Radviliškis to Šiauliai.

The speed limit for most of the road's length is 90 km/h.

This route is a part of International E-road network (part of European route E272).

The stretch of the road between Radviliškis and Šiauliai is modern expressway, with limited access and a 120 km/h speed limit.

There are also distant plans to build an expressway to Šeduva, bypassing Radviliškis.