[Talk-GB] Rendering problem (Osmarender layer)

[Michael Collinson]

At 01:34 PM 9/3/2008, Nicholas Barnes wrote:
...

>but leading on from this, I have a question for everybody....
>
>I found somewhere a reference which said that roundabouts should have
>the same road type as the most major road at the junction and not as the
>other feeder roads.
>
>Unfortunately, I can't seem to find this any more, so I am now wondering
>whether that was just a figment of my imagination!
>
>Anyway, In the example Ed gave, I would therefore have set the
>roundabout to be highway=trunk (and not highway=primary as it is at the
>moment) and I would have set the roundabout to the West of it likewise.
>But thinking about it.....
>
>If the main road is a highway=motorway, then the roundabout shouldn't be
>highway=motorway, because (in the majority of cases), it isn't a
>motorway. Perhaps, therefore, the roundabout should be
>highway=motorway_link. Or should it be highway=X (where X is the type of
>the most major road directly connecting to it (i.e. not with a _link).
>
>Am I being overly pedantic, or is there a /proper/ way of doing this?

It never hurts to be pedantic with tagging!  Yes there was a tip 
about mapping a roundabout as the most major road connecting to it, 
i.e. directly connecting to or across it. So in your example it would 
almost certainly be highway=motorway_link.

Though just to confuse things again slightly, I would normally 
consider a primary or trunk road passing across the roundabout to be 
"above" a motorway link and therefore map the roundabout as primary 
or trunk - I don't know if that is standard practice.

Mike