As I mentioned in my previous post, it’s extremely unlikely any data consumer is making use of that information.
But, there is, as far as I’m aware, no other attempt at defining expected defaults in the OSM database. That, despite the fact that, as can be seen at https://wiki.openstreetmap.org/wiki/OSM_tags_for_routing/Access_restrictions , pretty much every country has their own expectations of what the defaults are. I think the best we can do is a) Document the defaults we assume as part of the Australian Tagging Guidelines and also copy the relevant information into the table for Australia in the page linked above b) Use the def: keys as described in the Defaults Proposal, either as that proposal envisioned on separate type=defaults relations, or as we are currently doing, directly on the boundary relations, to at least make an attempt at providing information about the assumed defaults in an easily machine readable format. Without that, the current situation is that every data consumer has to figure something out on their own, for every country or just make general assumptions. And all mappers simply have to come up with their own ideas of what the defaults might be when they are deciding which values they are going to tag as “being different from defaults”. Obviously, when, in lack of any authoritative source, the idea of what the defaults may be are different between individual mappers, and mappers and data consumers, the outcome is largely undefined and undefinable. Which is what the situation is right now. From: Andy Townsend <[email protected]> Sent: Wednesday, 2 February 2022 23:31 To: [email protected] Subject: Re: [talk-au] Path versus Footway On 02/02/2022 11:36, Kim Oldfield via Talk-au wrote: On 2/2/22 21:45, Phil Wyatt wrote: Is there somewhere to view those defaults for Tasmania? I assume its not usually editable by mappers? See https://www.openstreetmap.org/relation/2369652 Specifically the tag: def:highway=footway;access:bicycle = yes In OSM worldwide, that's only set for Australia: https://taginfo.openstreetmap.org/keys/?key=def%3Ahighway%3Dfootway%3Baccess%3Abicycle#overview Do any routers actually read that? Best Regards, Andy
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