[Tagging] New tag proposal: 'add=milestone'

Colin Smale colin.smale at xs4all.nl
Wed Oct 9 06:59:00 UTC 2019

I would just like to make a point about mileages/kilometrages.
Physically marked positions (e.g. a milestone or a sign with an address)
can not be replaced by, or derived from, the actual distance along the

These distances are not constant. Roads get diverted, split, recombined
etc which can change the distance AND the zero-point. If you follow the
hectometer (100m) markers on motorways in the Netherlands you will see
loads of discontinuities caused by changes through the years.
Occasionally, where a change makes a road longer, a whole segment is
"recalibrated" to avoid duplicate markers or gaps. Where a road is made
shorter, a "jump" in the values is used. 

On 2019-10-09 08:43, Martin Koppenhoefer wrote:

> sent from a phone
>> On 9. Oct 2019, at 03:24, Jorge Aguirre <jorge.aguirre at kaart.com> wrote:
>> After reading all the responses and comments made regarding this issue I would like to modify the originally proposed tag name ('addr=milestone') to a new proposal to name it:  'addr=road_marker' - which works for both the kilometer and mile highway location markers.
> this implies road markers must be present, right? Isn't this mainly about the distance from some zero point, even in the absence of road distance markers? 
> It could be addr:kilometrage to refer specifically to this distance, but I agree on the other hand this would have a reference to kilometers in the tag, which isn't universally working well on a global level 
> Cheers Martin 
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