[talk-au] Adding lane tags to major roads

Andrew Harvey andrew.harvey4 at gmail.com
Sat Dec 8 00:29:42 UTC 2018


On Sat., 8 Dec. 2018, 10:38 am Martijn van Exel <m at rtijn.org wrote:

> That is a good point. The query would probably be easy enough to modify.
> Something like this...
>
> [timeout:190];
> area[name=“New South Wales"]->.a;
>
> way[highway~"motorway|trunk|primary"][!lanes][!"lanes:forward"][!"lanes:backward"](area.a);
> out body geom qt;
>

Yeah but I don't think I can modify your maproulette challenge, are you
able to?

>
> I think it needs to be pre-processed a bit more to weed out the very short
> segments. And perhaps work on areas where lanes actually matter (urban)
> first.
>

> I was looking at how to slice that and got interested in the status of
> administrative boundary relations for Australia. It seems to be
> inconsistent, for example in South Australia there is pretty good (but not
> complete) coverage of admin_level=6 http://overpass-turbo.eu/s/EmZ and
> even one admin_level=8 (http://overpass-turbo.eu/s/En0) but in other
> states the admin_level=6 coverage is pretty sparse or absent (
> https://imgur.com/a/gmUJs2r, query at http://overpass-turbo.eu/s/En1 but
> watch out, it’s a lot of data). If you all think this is useful to fix /
> complete perhaps we can set up a page to coordinate. I’m happy to help.
>

There's another thread ongoing on this list about importing suburb,
localities and LGA boundaries.

>
> --
>  Martijn van Exel
>  m at rtijn.org
>
> On Thu, Dec 6, 2018, at 17:23, Andrew Harvey wrote:
>
> Overall I think it's a great idea.
>
> Could you filter out ways that have lanes:forward and lanes:backward?
> eg. https://maproulette.org/mr3/challenge/3375/task/6686753 which
> shouldn't need a redundant lanes tag as you can just add them up.
> On Fri, 7 Dec 2018 at 10:49, Martijn van Exel <m at rtijn.org> wrote:
>
>
> Hi folks.
> I created MapRoulette challenge asking mappers to look at aerial images
> and add lane tags to major roads.
> https://maproulette.org/mr3/browse/challenges/3375
> This particular one is for NSW but can easily be ‘cloned’ for other
> regions.
> I wanted to get your opinion on this — good / bad idea? Can it be
> improved? Smaller regions? Any feedback welcome.
> Martijn
>
> PS the Overpass Query this is based on is:
>
> [timeout:190];
> area[name="New South Wales"]->.a;
> way[highway~"motorway|trunk|primary"][!lanes](area.a);
> out body geom qt;
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>
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