How do I open a Open Street Maps OSM?

Ok, so I haven’t used UE4 in a long time and AR is becoming popular so I thought I’d try my hand at it. I ran into this thing called Open Street Maps that I wanted to use as practice, but it exports .osm files which I have never used before. My question is how the heck to I use .osm files in UE4??? I heard mention of a plugin called Real Roads OSM, but I can’t find it anywhere! Any help would be wounderful.