Am Mo., 20. Mai 2019 um 14:12 Uhr schrieb Joseph Eisenberg < joseph.eisenb...@gmail.com>:
> How should we classify different types of aerodromes? > > We can already distinguish private aerodromes with the access tag > "access=private" and military aerodromes with "military=airfield", and > heliports have their own tag, but currently large international > airports and tiny airstrips are not clearly distinguished. > > I believe we can make a reasonable distinction between major classes > of aerodromes: > > 1) Airstrips without buildings or any other developed features > > 2) Developed general aviation aerodromes which do not offer any > regularly scheduled public, commercial passenger service > > 3) Commercial airports which offer regularly scheduled commercial > passenger service > other proposed classification systems have referred to number, size and surface of runways. > > History: > > In the very early years of OSM, there were three types of features > where planes could land: aeroway=airport for airports, > aeroway=airfield for undeveloped airstrips, and aeroway=aerodrome for > general aviation sites, if I understand the history correctly. These > were rendered differently back in 2008, it appears, based on the old > discussion in the talk pages. > IIRR, airfield and airport were never promoted in the wiki, although there have been rendering rules, this wasn't established tagging by the time, and was more occassional than frequent use. There have been other rules as well (e.g. place=metropolis), which have never had any usage at all (unlike aeroway=airport, which had almost 450 uses by the beginning of 2008 and was then mass retagged). ...Some mappers have used > aeroway=airstrip for small airfields without buildings or any other > developed features, so that they will not be rendered. Others have > proposed tags to specify the type of aerodrome. > indeed aeroway=airstrip is "quite common" (4474 uses now, compared to 41000 aerodromes and 50000 runways) Current tags for"subtagging" are 3 110 aerodrome:type with these values: public 1 291 private 337 regional 309 military 293 military/public 262 airfield 237 international 201 gliding 66 civil 54 airstrip 20 1 379 aerodrome with these values: international 386 airstrip 193 public 167 private 137 regional 131 airsport 77 airfield 73 mountain␣airfield 43 gliding 41 military 31 domestic 24 The most recent proposal in 2014 suggested using "aerodrome=*" which seems to fit best with the usual way of tagging the type or main classification of a feature. https://wiki.openstreetmap.org/wiki/Proposed_features/Aerodrome Cheers, Martin
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