[talk-au] OSM Way & Govt Street (centerline) Correlation, how?

[Andrew Harvey]

Hi Andrew,

Just to add what others have said already,

> OSM adoption is largely dependent on a minimum correlation between the
OSM ways and the streets found in Government centerline/road datasets
(States and/or LGAs)

Could you elaborate on what exactly you mean by that or what specifically
you're aiming to achieve?

For example could you use a map matching algorithm to match OSM data to
other road network data but since there will always be differences between
multiple datasets that's never going to be perfect.

Graeme mentioned on/off ramps, but more generally there could be
differences in how the centerline is represented. For example, OSM splits
ways where there is a physical separation, so you might find other datasets
just have one centerline, but OSM would have two parallel ways for each
direction. The transition between these two modes is never ideal either.
This isn't saying one is necessarily wrong but rather have different
guidelines on where the line should be drawn.

The other consideration is that most states we only have access to GPS or
satellite imagery to derive road geometries from so the geometry accuracy
in OSM isn't necessarily as great as survey grade data.

On Mon, 6 Jul 2020 at 12:00, Andrew Hughes <ahhughes at gmail.com> wrote:

> Hi All,
>
> First time poster and very new to OSM so please feel free to throw
> anything at me you think I should educate myself on.
>
> I'm currently the GIS Lead at the National Heavy Vehicle Regulator (HNVR).
> We're very serious about adopting OSM for some of our needs. However, our
> OSM adoption is largely dependent on a minimum correlation between the OSM
> ways and the streets found in Government centerline/road datasets (States
> and/or LGAs).
>
> Q: Would anyone be able to provide me with some insight as to what we
> might expect when looking to achieve the correlation we need? Please be
> aware, our intent is to contribute and "close the gap" but we need to know
> if/how this can best be done in a cohesive way within the OSM community. *I'm
> also aware there may be licensing issues, please overlook these for now.*
>
> The NHVR are quite serious about what it hopes to achieve in the next 12
> -24 months through GIS and we are very enthusiastic to learn and contribute
> to OSM. I hope to be speaking with you a lot more in the near future.
>
> Thanks in advance,
> Andrew Hughes
>
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