On Wed, May 13, 2015 at 12:56 AM, Jo <winfi...@gmail.com> wrote: > not by name, explicitely, but that's how we've been using it since the very > beginning. It will be really hard to change that. We also have maxheight and > maxwidth, I think it's obvious those are hard limits, not advisory.
That's fuzzy also. A signed height limit is likely somewhat conservative. On a USA road way that's an advisory sign, but if you run a larger load under the bridge and something happens it's your fault. The actual maximum height is likely larger. There are heavy goods databases with precise measurements taken by laser scanners on the roadway. Thus: maxheight:signed maxheight:regulatory maxhieght:measured And then for the boating community we have the concept of clearance relative to the tide level. Marinas for example will often list depth at low tide (or mean lower low water). Height/depth may be pegged to mean sea level with the mariner left to work out the current day's tides. maxheight:signed = 5 meters above mean sea level = 5 mamsl = 5 meters amsl maxheight:measured = 7 meters mamsl _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
