[talk-au] [EXTERNAL] Re: Join roundabouts

[Nemanja Bracko (E-Search)]

Honestly it would take too much time to look for these, but here's the example:
https://prnt.sc/rw0jhf

Please focus on a green relation, segment TO Sydney.

Thanks,
Nemanja

-----Original Message-----
From: Andrew Davidson <theswavu at gmail.com> 
Sent: Thursday, April 9, 2020 11:34 AM
To: Nemanja Bracko (E-Search) <v-nebrac at microsoft.com>; Andrew Harvey <andrew.harvey4 at gmail.com>
Cc: OpenStreetMap <talk-au at openstreetmap.org>
Subject: Re: [EXTERNAL] Re: [talk-au] Join roundabouts

On 9/4/20 5:40 pm, Nemanja Bracko (E-Search) wrote:
> 
> Anyway, back to roundabouts...
> When approaching to roundabout, you will see at least one signpost which informs you that you approaching to the roundabout. It will look like this:
> https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftiny
> url.com%2Fuam667d&data=02%7C01%7Cv-nebrac%40microsoft.com%7Ca52744
> 1a54e645ec45e708d7dc691d9e%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%
> 7C637220216336463661&sdata=l80zq8dFvc6HbZmiqdhLhYIJxc1YahXtqBfRYPp
> fms0%3D&reserved=0
> 
> and then, within the roundabout you have a new signpost which can be totally different than it was before the junction:
> https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftiny
> url.com%2Fwagdlv3&data=02%7C01%7Cv-nebrac%40microsoft.com%7Ca52744
> 1a54e645ec45e708d7dc691d9e%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%
> 7C637220216336463661&sdata=pbkEzfoJIAOn3gGUFkNQvrNLoP2%2FE7olll%2B
> 08URY46k%3D&reserved=0

If you have two different destination signs then you have two separate destination_sign relations.
> 
> The reason why do we split it into couple of ways is to properly put direction where it is possible to see the sign for the first time.

You do not need to split the ways. If you read the wiki page you will find that the members of the relation can be specified using the *nodes*

> 
> Davdson said, by OSM Wiki, everything is optional, except member "to". Yes, you are correct, but if you put both of these relations in "to" - how could you recognize which one is before another? The other thing is that if you put first signpost in relation with "to" member only (or with "intersection" and "to" members), but without "from" - destination signpost would be displayed from ANY direction that you are coming from.
> 

Do you have a real world example? If you do I can tag it for you, it's going to be easier than trying to explain it.