Opened 11 months ago

Last modified 10 months ago

#22633 new enhancement

Check tag with multiple values on power lines when changing direction of way

Reported by: Gazer75 Owned by: team
Priority: normal Milestone:
Component: Core Version:
Keywords: power line multiple voltage wire Cc: francois.lacombe


For some tag values like voltage and wires the direction of way matters when there are multiple circuits.
Like two circuits with one being triple and one double wire.
Same can be true for voltages. The side of the tower each set is on will matter for a dual circuit.


Changing the direction of the way will then put the values on the wrong side sort of, as values would be counted left to right.

This is basically a similar check line oneway=* and direction=* tags
It would apply to power=line and power=minor_line

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Change History (4)

comment:1 Changed 11 months ago by skyper

Cc: francois.lacombe added
Keywords: power line multiple voltage wire added

I am unsure about this. The wiki does not mention the order. One solution would be to use post-fix :left/:middle/:right for the keys in question which does already work for JOSM and possibly all other editor software respecting the post-fixes.

comment:2 Changed 11 months ago by francois.lacombe

I know this is not really acceptable but the most relevant solution is to use routing relations
Despite years-long RFC we don't manage to agree on launching the vote to unlock all benefits it brings.

Such multiple values in one key is a workaround, because every values of those lists should go in a dedicated relation.
Currently, those lists are barely usable and indeed depend on the direction of the way.

That's why I don't recommend to make development on editors side since it's a data matter.
If JOSM maintainers want to go there anyway, yes changing lists order on every way direction change is a right thing to do.

Last edited 11 months ago by francois.lacombe (previous) (diff)

comment:3 Changed 11 months ago by Gazer75

A circuit relation would not indicate which side of the tower it is on.

The order of value is the same as for tagging multiple road lanes and their values basically.
Lane 1 is always the leftmost one.

Either way the Openinframap currently do display values from left to right depending on way direction.

comment:4 Changed 10 months ago by francois.lacombe

We miss a logical level here. Lanes aren't represented in the power model.
Voltages and frequencies are the operating ones, bound to relations, not the design ones, bound to the physical lines.

One solution could be using the way's role in every relation to state which "lane" the relation runs over the line, but it's not currently done, nor proposed.
We had the same kind of issue for tower refs that can be different for every relations.

If the first routing proposal had been voted years ago, we could begin to think to proper solution for those remaining issues.

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