Overpass API query: How to return outermost nodes only?

I'm working on a bit of an isoline/catchment issue for some set locations.

I need to get an idea of where the road extents are within a given radius or bounding box

eg: 5km, 10km, 50km of the facility.

I can do this with queries like the one below But I don't need all 70,000 points (5mb), I just need to know the outer reachable ring. This is more of an issue on the coast where I basically need to know the closest road to the beach.

http://overpass-turbo.eu/s/sRf

Any suggestions?

overpassapi overpass

asked 08 Nov '17, 22:36

lobsang
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accept rate: 0%

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question asked: 08 Nov '17, 22:36

question was seen: 1,044 times

last updated: 08 Nov '17, 22:36

Overpass API query: How to return outermost nodes only?

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