[talk-au] Adopting "AU" Prefix on Network tags

[Dian Ågesson]

Hi,

I've cobbled together a draft model of how we could adopt the "AU" 
prefix within the network tags based on some of the issues raised in the 
previous thread.

https://wiki.openstreetmap.org/wiki/User:Diacritic/Proposed_Australian_Routes

Would really appreciate your thoughts and opinions; tried to match the 
existing structure as closely as possible.

Dian.

On 2022-08-12 12:36, Dian Ågesson wrote:

> Hey Andrew,
> 
> I'm not surprised this is challenging to explain in an email. When I 
> tidied up the Roads wiki page it was immediately clear that there are 
> multiple layers of complexity here.
> 
> My understanding that there are several distinct "highway" concepts in 
> Australia.  When you are referring to state routes and national routes, 
> are you talking about the old, numberic route numbering system? Or, are 
> you talking about highways that have been gazetted as a "state 
> controlled highway", such as State (Bell/Springvale) Highway. Does it 
> actually make sense to have the "A1" as part of the "National Highway" 
> network, given that it is an alphanumeric route?
> 
> I don't believe it is possible to assume that every numbered route has 
> a specific name, and vice versa (The A1!=Princes Highway!=Imlay Street, 
> Eden), but it would be help to update the network tags to be more in 
> line with international practice.
> 
> Dian
> 
> On 2022-08-11 07:45, Andrew Hughes wrote:
> 
> Hi Andrew,
> 
> No I had not seen that and it's really helpful thank you.
> 
> This is quite challenging to explain in an email but I will try...
> 
> Scenario: Given a way, how can I determine if that way is part of a 
> state or national route with a name?
> 
> Scenario in Action:
> 
> * Given the way "Mulgrave Street Gin Gin QLD" 
> https://www.openstreetmap.org/way/31973923
> 
> * Is this part of any relation.... Yes there are 2
> 
> * First relation is the A1, is this a national/state Highway YES! 
> because it has the route=road, network=NH 
> https://www.openstreetmap.org/relation/198279
> * Second relation is "Bruce Highway", is this national/state, NO! 
> because it does not have a network=NH or S tag.  
> https://www.openstreetmap.org/relation/198331
> 
> What's missing from the above:
> 
> * The Bruce Highway relation 
> https://www.openstreetmap.org/relation/198331
> 
> * Does not identify that it is related to the A1 - National Highway
> * Does not identify that south most section in North Brisbane the M1
> * Does not identity that this is a State Route - but I am unsure if it 
> should
> 
> * Similarly, the A1 relation  
> https://www.openstreetmap.org/relation/198279
> 
> * Does not identify that it is related to the Bruce Highway (route)
> 
> * The way  "Mulgrave Street Gin Gin QLD" 
> https://www.openstreetmap.org/way/31973923
> 
> * Can't be reliably determined to be part of a state/national route and 
> found to be named "Bruce Highway". Yes, I can say its on the A1 
> (national highway) but I can't say that the Bruce Highway is a 
> State/Road route
> 
> My 2c
> 
> I'm unsure if what I am looking for should exist in a hierarchy of 
> parent/child relations, or if it is best left to trawling through tags 
> and finding references by convention and hope that things are tagged 
> correctly. I kinda think the first is correct, or else why would OSM 
> even have relations?
> 
> Parent Child relation down to the way members....
> 
> * RELATION: name=National Highway; ref=A1; route=road; network=NH
> 
> * RELATION:   name=Bruce Highway  ref=A1:M3; route=road; network=S  
> <--- not sure if this is S or NH
> 
> * RELATION:   name=Bruce Highway  ref=A1; route=road; network=S
> 
> * WAY....
> * WAY....
> 
> * RELATION:   name=Bruce Highway  ref=M1; route=road; network=S
> 
> * WAY...
> * WAY...
> 
> The above would allow a way's membership and hierarchy to be traversed.
> 
> Thoughts?
> 
> Please let me know CHEEERS!
> 
> On Thu, 11 Aug 2022 at 14:50, Andrew Davidson <theswavu at gmail.com> 
> wrote: On Thu, Aug 11, 2022 at 11:48 AM Andrew Hughes 
> <ahhughes at gmail.com> wrote:
>> Some worldwide/geographic tagging guidelines exist, that are based on 
>> a combination with the "network" tag: see 
>> https://wiki.openstreetmap.org/wiki/Relation:route#Road_routes
>> 
> 
> Have you read 
> https://wiki.openstreetmap.org/wiki/Australian_Tagging_Guidelines/Roads#Routes
> ?
> 
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