Am Di., 26. Feb. 2019 um 13:52 Uhr schrieb Fernando Trebien < fernando.treb...@gmail.com>:
> On Mon, Feb 25, 2019 at 9:00 PM Sergio Manzi <s...@smz.it> wrote: > I think the official categories in Codice della Strada should probably > be assigned to OSM's classes by closely matching the descriptions in > the wiki. not at all, we already have classified all of our roads according to wiki, surroundings/context, local knowledge etc. If we are to add "Codice della Strada" classes, it should not influence the highway class, it should be an additional tag. We might also decide to tag the Italian network classes explicitly. I'm not an expert in this field, but from a quick internet lookup it appears in Italy there are 4 classes of (kind of) movement: a - primary network (transit), b - principal network (distribution), c - secondary network (penetration), d - local network (access). For the specific characteristics you must take into account whether the road is inside or outside of a built-up area (this is generally an interesting information for which we do not explicitly cater in general with our tagging, but which should probably be introduced). When planning a road you must additionally take into account: - entity of movement (median distance that the vehicles travel) - territorial connecting function (national, interregional, provincial, local) - traffic components (light vehicles, heavy vehicles, motorvehicles, pedestrians, etc.) You can find more information in this ministrial decrete from 2001 which was issued after the new 1992 CdS law: http://www.mit.gov.it/mit/mop_all.php?p_id=1983 (this is mainly thought as a reference for the Italian mappers, I do not expect the others to read through 100 pages in Italian). The CdS classes are only part of the entire picture, e.g. the same CdS class (example "B Strada extraurbana principale") may be used for a "movement a" or "movement b" kind of road. > This would help Italians make sense of the map. really, the sense does not come from classifications mostly, it is the refs and names that make the information locally relevant. Joe Mapuser really doesn't need all the detail information typically, because we have already conveniently summarized everything into a single highway class ;-) Still, we should not deny the addition of detail, but it likely doesn't mean we can set up a lookup-table CdS to highway class and be done. Except for the official categories in Codice della Strada, I think > such attributes of the road should go into specific tags. if there is a clear 1:1 correlation between CdS and OSM, e.g. motorways, we already have that information in the map (well, besides we do not have specific tags yet for motorways in built-up settings). For example, > in Brazil, the administrative responsibility is represented by the > road's reference code, so it can be easily identified from ref=* tags > same in Germany, Italy and likely many other places indeed. Cheers, Martin
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