> I totally disagree. When surveying, I look at the reality of the elevation > of the bridge compared to all the layer-0 features around it. If it is at > the same elevation, the bridge stays at layer 0 and whatever it crosses is > tagged as layer=-1. This correctly represents the "ground truth". This is > very commonly the case with concrete drains/canals. It has the added > advantage of not requiring rework when you add a new feature to an area - > you simply tag that feature with the correct actual layer and no other > features need to be edited.
This works only if the section tagged with layer = -1 only includes that which is covered by the bridge. Tagging an entire road which happens to pass under a bridge as layer = -1 does not match what's on the ground. _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
