There are some but I wouldn’t say they are common or well known. They are called “kylätie” which literally means “village road” and the first one was opened in 2018. This article has quite well written info (in Finnish) and couple of pictures: Mikä kylätie? – yksikaistainen ajonopeuksia hillitsevä ratkaisu oudoksuttaa

For example this is the one most in Helsinki region could know of, since it was quite heavily featured in news when it was announced: Way: ‪Ainontie‬ (‪317953996‬) | OpenStreetMap