[Talk-GB] Mapping bridge heights from open imagery

Jez Nicholson jez.nicholson at gmail.com
Fri Jul 7 12:56:10 UTC 2017


I wonder whether the quarterly project pages could be extended to include
perpetual, gestating, and mini projects that people could dip into? Or am I
overly organised?

On Fri, 7 Jul 2017 13:41 Richard Fairhurst, <richard at systemed.net> wrote:

> Hi all,
> It would be great to get bridge height data into OSM, to stop those
> embarrassing truck-vs-bridge-deck interface moments.
> It turns out that with the advent of open street-level imagery (e.g.
> Mapillary, OpenStreetCam, and of course Geograph) it's really easy to
> find and tag bridge heights. I've written a short explanation:
>         http://www.openstreetmap.org/user/Richard/diary/41858
> In brief: choose a railway, follow it on OSM, look at imagery for all
> the bridges over roads, find a height road sign, read the height from
> it, tag the way accordingly.
> It's actually pretty fast, and we could get a lot of the UK's low
> bridges done easily. I've added a wiki page so that people can note what
> they've done:
>         https://wiki.openstreetmap.org/wiki/United_Kingdom_bridge_heights
> Anyone fancy joining in?
> cheers
> Richard
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