Hello
Purpose for the duplication was to make only the part of the road that is in Pärnu City to appear on the map in wikipedia.

I am new in OSM, so if the duplication is bad thing, then can you help me to delete it? :)

Best regards

Hello, its needed to make the map work on wikipedia.

Hello, I added it to the street's relatsion, it appears relatsion is needed for the street to appear on maps in wikipedia.