[talk-au] highway reference tags

[Liz]

1. what is on the wiki is not what is being done
2. the system annoys me anyway because one tag is being made to do two jobs as 
the ref tag is being used for both the reference and the administrative 
designation of the road

http://wiki.openstreetmap.org/wiki/Australian_Tagging_Guidelines#Non-
Alphanumeric_Highway_Shield
This system has "network" which isn't being used except in some relations.
Highway references hiding in relations don't get picked up by the renderers so 
we get bastardisation of the tags.


http://wiki.openstreetmap.org/wiki/Australian_Tagging_Guidelines#Alphanumeric_Highway_Shields
is not being followed.
According to this in Vic and SA the Sturt Highway should be ref=A20
However, it is marked NHA20 and NRA20 according to the whim of Transport SA 
who have old and new highway signs in different shield patterns on the route.

The decisions on tagging date from July and August 07
The initial proposal for ref:au= got targeted on the osm-talk list so we lost 
our chance to have separately rendered pictures of highway shields
http://lists.openstreetmap.org/pipermail/talk-au/2007-August/000086.html
http://lists.openstreetmap.org/pipermail/talk-au/2007-August/000099.html

Opinions?