https://ava.vaylapilvi.fi/ava/Tie/Digiroad/Rekkaparkit

From the dataset abstract

Lorry parking areas located along the E18 road.

The data is provided in Esri Shapefile format, using the ETRS-TM35FIN coordinate system. The data is maintained by the Finnish Transport Infrastructure Agency (Väylävirasto) and is compiled from information available in the Road Register/Velho and Digiroad information systems.

Source: Lorry parks on the road E18