[talk-au] Join roundabouts

[Andrew Davidson]

On 7/4/20 9:13 am, Andrew Harvey wrote:
> I mean when the from member should be the roundabout way, think of a 
> large roundabout where the destination sign exists on the roundabout 
> exit, the from is not the leading way it's the roundabout itself.

If the sign is on the exit of a roundabout you can:

1. Tag the outbound way using destination=*
2. Use a destination_sign relationship with a to and intersection member 
but no from member (it's optional in this case because the destination 
sign is identical from all inbound directions).
3. Use a destination_sign relation with to, intersection, and from 
*node* members. You can use either a way or a node on that way to 
specify a member of a destination_sign relation.

That's three alternatives to splitting the roundabout way to make a 
destination_sign relation.