Render elevated highway area above highways

[matthijsmelissen]

Elevated highway areas should be rendered above highways.

If not, it is not clear that the area is a bridge.

Examples:
http://www.openstreetmap.org/#map=17/-37.81716/144.94990

See also https://trac.openstreetmap.org/ticket/1873

[matthijsmelissen]

I think we should keep areas rendered low (even if they have a positive layer tag), to prevent them from hiding roads.

However, I agree that the rendering in the example is not clear. Note how the area extends all the way from the stadium to the footbridge, and is located above Wurundjeri way.

[matthijsmelissen]

Any suggestions on how to handle this?

[gravitystorm]

Very tricky to handle, I think. Examples of how it's handled in other maps would be illustrative.

[matthijsmelissen]

I added a bridge tag on the line-road. Not sure if it makes things worse or better.

Other maps don't usually render areas, I believe.

[matkoniecz]

I think that data is partially wrong here.

I added a bridge tag on the line-road.

I am certain that it should be changed to highway=pedestrian. I am less sure whatever highway=pedestrian + area=yes is correct (it seems to be rather highway:area) - I also changed this.

Result: