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<p>I requested the import for Hull and East Yorkshire (areas were
only imported when requested). I then spent a lot of time
surveying the stops in Hull and most of the stops in East
Yorkshire. The data quality was patchy - I don't think we should
rely on it with checks. I wrote a few blog posts about the
process, here's one with a summary for hull:
<a class="moz-txt-link-freetext" href="https://chris-osm.blogspot.com/2009/11/last-stop-in-hull.html">https://chris-osm.blogspot.com/2009/11/last-stop-in-hull.html</a></p>
<p>As far as I can tell no one has resurveyed any of this data in
the past ten years. A handful of new stops were added in a new
housing estate. I was contacted by a someone from a local bus
company about amending the stops and adding bus routes, but
nothing came of it.</p>
<p>My feeling about imports in general is that they MUST be curated
and checked otherwise we risk propagating poor quality data. If
you reimport data it is important that hand-checked and corrected
data must not be overwritten by the import. <br>
</p>
<pre class="moz-signature" cols="72">--
cheers
Chris Hill (chillly)</pre>
<div class="moz-cite-prefix">On 15/02/2021 20:34, Jay Turner wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CABGELU93dVxi1aDjRy7_2iYaifUKoweChTrsjQ5Avi1G_nbDYA@mail.gmail.com">
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<div dir="auto">I have a few questions regarding the 2009 NAPTAN
import.
<div dir="auto"><br>
</div>
<div dir="auto">On the <a
href="https://wiki.openstreetmap.org/wiki/NaPTAN/Import"
moz-do-not-send="true">wiki </a>it states: <i>"The
Department required that the official identifier for each
feature ("atcocode" in the case of a bus stop) is included
in the imported data to allow the movement of these
features to be tracked over time and for updates to
potentially be added in the future. We do have this as a
tag on imported bus stops."<br>
<br>
</i></div>
<div>Sadly, much of the UK hasn't been touched since the
NaPTAN
data was imported. (<a
href="https://overpass-turbo.eu/s/13Gq"
moz-do-not-send="true">82202</a> / <a
href="https://taginfo.openstreetmap.org/keys/naptan:AtcoCode?filter=nodes"
moz-do-not-send="true">230474</a>) 35%<br>
</div>
<div>I don't really know how to analyse the data of the other
65% but I'll place a bet it's not in a great state.
Additionally, 95% of all `naptan:verified` tags are `no`.<br>
<br>
</div>
<div><b>I want to know if it's possible to reimport/mass
update NaPTAN data from the latest set of information</b>.
Additionally, I propose a few extra tags;<br>
- `source:date=*` with the `ModificationDateTime` field
within the NaPTAN datasets so we have a good idea of when
the data was last touched.<br>
</div>
<div> - `public_transport=*` because... well yeah. We have
that now. We didn't in 2009.<br>
</div>
<div> - `unsigned=yes` for bus stops with BusStopType=CUS
because it's defined as <i>"Unmarked stop (or only marked
on the road). Point footprint.". </i>Previously, these
stops weren't tagged with highway=bus_stop and I think we
should add those en-mass too. Leaving those tags off has led
to confusion with mappers unfamiliar with NaPTAN and caused
the nodes to be blindly deleted or merged into other
objects.<i><br>
</i></div>
<div><br>
</div>
<div><b>A lot has changed since 2009, we now have tools to
help us find and spot data issues on the ground such as
StreetComplete</b>. There's a discussion on GitHub about
doing something with these tags to help verify it on the
ground. That can be found here: <a
href="https://github.com/streetcomplete/StreetComplete/issues/2566"
moz-do-not-send="true">https://github.com/streetcomplete/StreetComplete/issues/2566</a></div>
<div><br>
</div>
<div>TL;DR: I think we need to mass update NaPTAN data
regularly and use StreetComplete or MapRoulette to verify
the import and reduce the count of `naptan:verified=no`.<br>
<br>
</div>
<div>FYI, I think the correct tagging for verified is
`naptan:verified=yes` - I know some people delete the tag.<br>
<br>
</div>
<div>Thank you for reading my incoherent ramble,</div>
<div>JayTurnr<br>
</div>
<div><br>
<br>
</div>
<div><br>
<br>
</div>
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</pre>
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