https://openstreetmap.org/copyright | https://openstreetmap.org |
Copyright OpenStreetMap and contributors, under an open license |
https://openstreetmap.org/copyright | https://openstreetmap.org |
Copyright OpenStreetMap and contributors, under an open license |
router suggested I not use the slip road from Long Mile Road to Nass Road but to drive to traffic lights and then turn left...
Geometry could do with minor tweaks, but I can't see anything wrong with the data. It even has an "only_straight" turn restriction that forbids what your router was suggesting.
That data isn't recent either. What router was that ? OpenRouteService and OSRM get it right.
Closing note right now, but feel free to reopen if you can point at bad osm data.