I wonder how roundabouts in European cities would affect these plots, since in OSM they are often represented as a single way. The original post about this says

I wonder how roundabouts in European cities would affect these plots, since in OSM they are often represented as a single way. The original post about this says: "OSMnx automatically calculates all of the streets’ bearings. Specifically it calculates the compass bearing from each directed edge’s origin node u to its destination node v." I suppose it depends what they mean by "directed edge". I'd expect it's what most modern routers use i.e. the portion of a way which goes between two junction nodes. Although it might mean literally every section of a way, which in some sense would be more accurate. Either way, you would expect roundabouts to bloat out the plot.