It runs from Erottaja in Helsinki to the Russian frontier at the Vaalimaa border crossing point in Virolahti.

The route of the road is Helsinki – Vantaa – Porvoo – Loviisa – Kotka – Hamina – Vaalimaa (Russian border).

After completion of the motorway section bypassing the town of Hamina, due in late 2014, 155 km (96 mi) of the highway's total length of 193 km (120 mi) will be motorway.

There is a plan to extend the motorway from its current endpoint in Lelu, Hamina to Vaalimaa by 2018, finalizing the motorway link between Helsinki and the Russian border; construction is due to begin in late 2015.

You can help Wikipedia by expanding it.This article about transport in Finland is a stub.