[Talk-ca] New MapRoulette challenge to address highway class flip-flops

[Harald Kliems]

Hi Martijn:
I just tried the challenge, and all of the first four tasks that came up
produce an "area too big" error in JOSM (long highways in very rural
areas). Is there any way to fix this? Or maybe warn people to not use JOSM
for this challenge?
 Harald.

On Mon, Feb 4, 2019 at 10:37 AM Martijn van Exel <m at rtijn.org> wrote:

> Hi all,
>
> Per Matthew Darwin’s request on Twitter, my team prepared a MapRoulette
> challenge for ‘highway class flip-flops’. What does this mean? Consecutive
> ways that have a suspicious change from one highway= value to another and
> then back to the former. This happens sometimes when mappers change the
> highway= value for some way but miss a bridge somewhere. An example is
> https://www.openstreetmap.org/way/53514358#map=19/51.23309/-116.65373 where
> the bridge is marked as residential but the two adjoining ways are marked
> as unclassified.
>
> You can find the challenge at https://maproulette.org/mr3/challenge/3588 and
> your feedback is very welcome.There are ~300 tasks.
>
> If you have other ideas for challenges to clean up / review existing data
> let me know and we can discuss.
>
> Martijn
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