On 2017-04-27 00:48, Warin wrote: > Hi, > I have come up with some detail tagging for rest areas but want to get > some oversight on it and help with one aspect. > http://wiki.openstreetmap.org/wiki/Tag:highway%3Drest_area > Easy(?) Details > Some of these have time limits - easy enough to use a conditional max > stay tag > rest_area:condition:maxstay=20 > Stops people 'camping' over a long period. > > Restricted to HGV use only, use access tags > access <http://wiki.openstreetmap.org/wiki/Key:access>=no > <http://wiki.openstreetmap.org/wiki/Tag:access%3Dno> with hgv > <http://wiki.openstreetmap.org/wiki/Key:hgv>=yes > <http://wiki.openstreetmap.org/wiki/Tag:hgv%3Dyes> > More difficult detail > One I am having problems with, where they can be used for 'camping' with a > caravan/camper-van (but probably not a tent). > rest_area:camping=caravan > > or > > rest_area:camping:caravan=yes > > would convey the meaning .. but is it a 'good' tag that would allow for other > things and follow other tagging methods? > > caravan=yes could simply mean access and not convey the camping > aspect? Note the max stay would still apply (if there). > > > Any thoughts on tagging these features for rest areas? > > Hi,
Your questions show that there is no OSM formal definition of the usage of name space. I once sketched one, a key of which is rules to make a canonical representation of the tags. It says that for the main tag (the one representing the object (vs attributes)) highway=rest_area canonically means highway:rest_area=yes and that attribute tags append to that. So, your examples become highway:rest_area:rest_area:camping=caravan which in its canonical form is highway:rest_area:rest_area:camping:caravan=yes obviously, one rest_area is too much and it must be: camping=caravan ==> highway:rest_area:camping:caravan=yes camping:caravan=yes ==> highway:rest_area:camping:caravan=yes same canonical representation but allowing other attributes of camping than caravan. camping=yes (attribute of rest_area) would mean that camping is allowed caravan=yes (attribute of rest_area) would mean that the area can be used by caravans (but an access=* would be the normal way to do it) camping=caravan=yes would mean that the caravans can be used for camping I hope I made no mistake. Well, it's risky writing this. Someone may come down on me again to scold me and say : "we" do not do that. Very logically not saying who is "we". That's apparently not you. BTW, a rest_area can be just some space beside a road. It is not a parking but it can be used to momentarily stop out of the traffic. Right? Cheers, André.
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