Es war einmal vor 7 Jahren...
Wenn ich mich recht erinnere hatte damals Winterthur mit doppelten Strassennamen aufgeräumt. Da es die Wülflingerstrasse doppelt gab, wurde eine der beiden umbenannt. Sinnvollerweise war dies nicht die Hauptstrasse sondern der Waldweg. Im Zuge dieser Massname wurden damals übrigens mehrere Duplikate bereinigt. Hintergrundinformationen finde ich leider keine mehr. Ich hoffe dass dir weiter.

If you look into the history, you will see that user "mitilio" changed the value from oneway=yes to oneway=no;yes.
It looks like mitilio merge two ways (one with oneway=no, the other with with oneway=yes). The ID-Editor put both values together.

Hi tshedy
it looks like you don't understand the concept of multipolygons. For the first, read osm.wiki/Relation:multipolygon

I will repair this - again - for you, but in future, please leave those relations intact.

Multipolygons are for areas and are absolutely necessary for two reasons:
1. a closed way is longer than 2000 nodes (which is a limit for ways in OSM).
2. the area has "holes" (like island in a lake).

For the "mohale dam" BOTH reasons REQUIRE a multipolygon. There is NO other way to map this in a serious way!

- In a multipolygon, the tags are NOT on the outer way, but on the relation.
- the ways for the outer way must have the role "outer" in the multipolygon.
- "holes" in the area must have the role "inner" in the relation.

JOSM can help you editing multipolygon relations.

Hope this will help you in the future.
mdk

Hi dcapiiae,

It's difficult. For me a 'wire' is a building which is normally floowed by the water (see also the pictures in the wiki 'waterway=wire').

But these buildings are higher than a normal power pole (6-7 meters). They are overflooded only on high water. This looks more like a dam.

Perhaps these buildings should be mapped by their function - which is not absolutly claer for me.

A wire is slowing down the speed of a stream to prevent erosion. A dam should stop the water to use it for irrigation or energy.

For me it looks more like a dam, but with the function of a wire. So feel free to improve the map.

regards
mdk

Hallo tshedy,
why do you unglue ways and areas? You destroy routing possibility and produce hundrets of errors and warnings!
You are using JOSM. Please validate your edits before uploading!
Regards
mdk