[Tagging] destination:symbol tag: country-specific symbols

[David Marchal]

Hello, there.

I mapped many destination signs, with symbols and all, but I occasionally encounter country-specific symbols (many examples here: https://fr.wikipedia.org/wiki/Id%C3%A9ogramme_routier_en_France). I could of course create new destination:symbol=* values for such symbols, but many of them are country specific, such as the ID15/ID16 series, and creating undocumented, unilateral values disturbs me; I know that I can act so, according to the "Any tag you like principle", but I'm reluctant to do so, because I feel that undocumented/unilateral values are much less susceptible to be used/rendered, and what would be the point of using values for them to be useless?

Besides, given the descriptions of these symbols, giving them an unambiguous destination:symbol=* value would likely produce rather long values; should a destination:symbol=* key contain several semicolon-separated such values, I'm afraid to quickly reach the 255 characters limit for an OSM tag value. In such cases, is it acceptable to simply use the ref of the symbol within a country-specific namespace?

For instance, mapping the symbol visible on the signs of the right-turning road (https://www.mapillary.com/app/?pKey=261676592312309) would give the following: destination:symbol=;;;FR:ID16a

Would this solution be acceptable/advisable? In this case, do I need to fill a Wiki proposal, or is a link to this thread acceptable to promote this possibility on the destination:symbol wiki page?

Awaiting your answers,

Regards.

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