2009/8/15 Roy Wallace <waldo000...@gmail.com>: > The wiki says "'Official' is stronger than 'designated'...'Offical' is > only for ways marked with a legal traffic sign".
the map-features main page states for access: " * official is used for ways dedicated to a certain mode of travel by law. Usually indicated by a traffic sign. " _usually_ This page: http://wiki.openstreetmap.org/wiki/Tag:access%3Dofficial states: "The value official for the access tags foot, bicycle and horse indicates a way legally dedicated to specific modes of travel by a law or by the rules of traffic. The tag is to signify the official, binding, legal nature of the dedication. A way may have several official dedications. " don't know why there is a limitation to "foot, bicycle and horse" and llamas and snowmobiles and others are not mentioned. Why don't we define the tags generally? Furthermore the page says: "The tag should only be used where there is a an official traffic sign or an unambiguous law. " so it is not equal to "signed". > My question stands - I still don't see much of a difference between > 'official' and 'signed'. see above, the difference is: "or an unambiguous law" (btw: who decides whether a law is "unambiguous"? Does "law" include customary law?) >> Bicycle=signed is IMHO not the best idea, because what do you do for >> official or designated _and_ signed ways? > > As I mentioned before, you would have to change the syntax to > something more like bicycle:designated=* and bicycle:official=*, > bicycle:signed=*, etc. Alternatively, change the tag definitions so > that the issue doesn't occur, or make one imply the other(s) - e.g. > signed implies official implies designated (we do already have > "'official' is stronger than 'designated'", so the latter is more or > less already true). doesn't this break the key-left-value-right-scheme? (Maybe not an issue as this is done for other tags as well). What would the values be? "yes" and "no"? Or could it be bicycle:official=signed? bicycle:official=permissive for the case of customary law? >> Also I didn't get the difference of designated and official. Maybe you >> can explain? I thought it was intended for the same situation. > > Please see the wiki. actually for designated you don't get a stable consensus on the meaning, the page changes from time to time the meaning so the meaning might be different according to when the mapper last looked it up in the wiki. > Eventually I gathered that official is what you > think it means, whereas designated is more of a "recommendation" as in > "this way is designed for *". The wiki definition makes only vague > references to "signs", but then the examples all heavily reference > signage. This IMHO is confusing. this is due to the change in meaning. An older Version stated: "This tag indicates that a route has been specially designated (typically by a government) for use by a particular mode (or modes) of transport. The specific meaning varies according to jurisdiction. It may imply extra usage rights for the given mode of transport, or may be just a suggested route." "specially designated" I'd interpret stronger than "recommendation". >> There is people already using tags like this: >> traffic_sign=DE:237 >> to tag signs. If you put this on a way it would be clear that and how >> a way is signed. > > Hmm. I think that is for tagging traffic signs, not for tagging ways. actually you find this on ways. And it's not the worst method (personally I don't use it), as the signs are (mostly) unambiguous, what you can't say about our tags ;-) cheers, Martin _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
