[talk-au] [OSM-talk] RFC: Tagging and renderingAustralianhighwaynumbers

[Ian Sergeant]

b.easton at uws.edu.au wrote:

> Is this right that the motorways you are thinking of are part of the
> Alphanumeric system and appear on a green rectangle? In Sydney, M2,
> M4, M5 etc. are actually metroad numbers, there are no 'motorways'
> as such, they are always part of a different tag, either a Metroad
> in the city, or NR or NH in rural.

There are several ways of looking at this issue..

1. Road reference according to what is on the street sign.

2. Road reference according to what they are commonly referred to.

3. Road reference according to some documentation, or historical map.

If you listened to the traffic reports of an evening you would be nowhere
if you didn't know where the M4, M5, M2, F3 & F6 were - they are mentioned
all the time.

There are signs on the road for M5 at the start of the M5 (but it is also
Metroad 5).

There are signs on the M7 for the M7.

I guess the OSM way is to go for what is marked on the street-signs.

Since

1. these are all going to migrate to A1, M1 etc in the future.

2. some roads in Victoris, (e.g. the M80) are sign-posted this way already

we have to allow for "M" style roads.

> Personally, I think we should probaly merge NR and NH and just have
> H- for Highway. H-1 can be handled as a special case by the renderer
> and show the white shield instead of green.

This won't work.

Heading south from Sydney you have NR-1 which is signposted as a black on
white National Route (black on white shield) all the way from Waterfall to
the Vic Border.

Heading north from Sydney you have NH-1 which is signposted as a National
Highway (yellow on green shield) all the way from Wahroonga to Maitland.

> It makes sense to me to have A, B, C and M all using their own tags,
> even though they will all be rendered similiarly (ref:au=AN-B3 for
> Alphanumeric type, B3 - Yuk).

I agree.

Ian.