[Tagging] layer=-1, rivers, bridges and tunnels

Martin Koppenhoefer dieterdreist at gmail.com
Sat Mar 15 12:25:31 UTC 2014

> Am 14/mar/2014 um 15:51 schrieb Fernando Trebien <fernando.trebien at gmail.com>:
> Do you agree that the river can be tagged with layer=-1 as long as
> this value is correct in relation to the layer of other
> nearby/crossing ways?

I would discourage you to do so. Layer tags should only be applied to ways that actually cross other objects on different layers (ie without intersecting them).

To me the Josm way of warning seems correct, as a crossing of objects on different layers should issue a warning.


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