[Talk-GB] Adding missing roads using Facebook detections

[Brian Prangle]

I echo Richard's comments - best to confine yourselves to new roads in
recently constructed residential developments - and even here you need to
be careful  as on the ground some roads will be service roads and some
will  be living streets and there will also be gated communities (can you
detect gates?). So definitely do not add access tags as these require a
ground survey.

Regards

Brian

On Fri, 27 Mar 2020 at 12:18, Richard Fairhurst <richard at systemed.net>
wrote:

> Jothirnadh Guthula wrote:
> > With a team of mappers @Amazon we are planning to improve
> > missing roads in UK using Facebook detections as a source. Please
> > let us know if you have any ongoing projects using this data source.
> > While adding missing roads, we will be adding all the associated
> > access tags as per available on-ground resources.
>
> I'd urge extreme caution on this, particularly in rural areas, for two
> reasons.
>
> Firstly, as Martin says, there are virtually no public roads unmapped in
> the
> UK. New construction aside, I think in the last five years, I've spotted
> two, both in Powys.
>
> Secondly, UK access rights are unique and complex, and can only be
> discerned
> either by survey or by consulting Definitive Statements where these exist.
> You should not be adding access tags, nor adding highway types that imply
> access rights (for example, highway=unclassified implies general public
> access to all vehicle types), unless you've surveyed the location or
> consulted a Definitive Statement.
>
> For an example of the issues, please see this changeset discussion:
>
>     https://www.openstreetmap.org/changeset/71668172
>
> In this case an Amazon Logistics mapper added motor_vehicle=yes which was
> inaccurate. In this particular case I was lucky to find an openly licensed
> photo to demonstrate the real access rights on that way.
>
> If you're exclusively mapping new housing estates in urban areas, though,
> go
> for it. :)
>
> Richard
>
>
>
> --
> Sent from: http://gis.19327.n8.nabble.com/Great-Britain-f5372682.html
>
> _______________________________________________
> Talk-GB mailing list
> Talk-GB at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/talk-gb
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk-gb/attachments/20200327/1e3ee4dd/attachment.htm>