> Does that imply that the merge of two lanes is still too costly?
Yes.
This one https://www.openstreetmap.org/#map=16/55.88495/37.47959 was built from scratch not very long ago. Notice how merges/splits are spread as far as possible.
> Does that imply that the merge of two lanes is still too costly?
Yes.
This one https://www.openstreetmap.org/#map=16/55.88495/37.47959 was built from scratch not very long ago. Notice how merges/splits are spread as far as possible.