> > 'Embankment' is frequently used for a built-up structure on a steep > hillside that keeps a road, railroad, or similar feature from sliding into > a gorge or river. See https://en.wikipedia.org/wiki/ > Embankment_%28transportation%29#/media/File:Embankment_1_%28PSF%29.png > for an illustration from Wikipedia. Except for the portion crossing the > tributary stream, the road in the picture is clearly NOT banked on the > uphill side, so the embankment here is what Warin was describing as > 'one-sided.' >
I would tag the structures in the illustration as "retaining_wall" in OSM. I guess the contradicting statements may stem from differences between British and US English (I am German myself with a British-English bias as I lived in the UK for many years) BTW there is a similar ambiguity regarding the definition of "pier" between US and British English. It's important to create tagging that is not ambiguous so that the data users can get it right. I am familiar with the style in Martin's example, as it's used in many maps in Germany, and I agree with him that we shpuld be able to tag such features correctly in OSM
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