Thanks to everyone for sharing their thoughts. > I personally recommend to use the length key while mapping street cabinets as > nodes.
Agree, length makes sense on nodes > The way in OSM is only a (sometimes not precise) drawing of an existing > feature and can be different from the reality. How precise is the value of the "length" tag? From what is the value derived? > To be more precise : OSM is based upon a 2D geospatial database. In my mind, a road climbing a mountain won't have the same length in reality than in the DB : the Z dimension may have influence too. For most highways this will have little difference. 10% (10 vertical meters per 100 horizontal meters) is considered a steep highway grade. In this example, the actual road length will be 100.5 meters (sqrt(10^2 + 100^2)). For ski slopes and aerial trams, yes, it will have a larger influence. > it is quite often used on bridges and tunnels, where the actual (official) > length can be observed. Perhaps "official_length" or "signed_length" might be more indicative of what actually is being recorded. _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
