[talk-au] Question about using NSW Speed Zone Data in OSM

[Mark Pulley]

I’ve got some further info on how this user has been editing (see comment on changeset https://www.openstreetmap.org/changeset/117791362 )

In short, Harsimranjit works for an un-named company. Unspecified people can report an incorrect speed limit on a road segment, it is verified (?how?) by someone else in the company, then goes to Harsimranjit who checks the claimed speed limit change with NSW Speed Zone Data, then if the NSW Speed Zone Data matches the proposed change, the edit is made. This process has obviously not worked in at least a few of these changesets (the ones I found had been changed incorrectly).

Mark P.

> On 19 Feb 2024, at 8:19 pm, Mark Pulley <mrpulley at iinet.net.au> wrote:
> 
> I haven’t done any reversions yet. I was planning to start from the oldest changeset and work forwards, however the oldest changesets don’s specify a source. I’ve asked about a couple of these including:
> 
> https://www.openstreetmap.org/changeset/117791362 - first changeset - on outskirts of Wilcannia
> https://www.openstreetmap.org/changeset/117831384 - outskirts of Old Junee
> 
> Both of these are claimed to be from information provided by ’someone’ who had travelled on those roads. I’ve just asked for more info regarding the source of this information.
> 
> I also queried a couple of recent edits from 'local information and NSW Speed Data’:
> 
> https://www.openstreetmap.org/changeset/147432769 - western edge of Kempsey from 'local information and NSW Speed Data’ - also from ’someone’ who had travelled on those roads.
> 
> https://www.openstreetmap.org/changeset/146881278 - private driveway near Brooms Head from 'local information’ - I had previously surveyed this maxspeed, and recent Google imagery showed the same limit. No reply regarding this one.
> 
> How should I (or we) approach this? Will I need to check available imagery for every changeset? Should I go ahead and revert the NSW Speed Data ones?
> 
> Mark P.
> 
>> On 12 Feb 2024, at 2:45 pm, Andrew Harvey <andrew.harvey4 at gmail.com> wrote:
>> 
>> No objections from me. They haven't responded yet, and from everything we can tell they imported the data without any other cross checks and didn't follow the import guidelines.
>> 
>> On Sun, 11 Feb 2024 at 22:00, Mark Pulley <mrpulley at iinet.net.au <mailto:mrpulley at iinet.net.au>> wrote:
>>> I’ve got some spare time (having caught up with the surveys from my last holidays), so I can go through these and revert them. Any objections?
>>> 
>>> Mark P.

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