[Talk-GB] DfT Cycling data - cycle lanes (quality)

[Andy Robinson]

On a related point.

I came across some OSM additions in my patch (Sutton Coldfield) which appear
to come from the dft data. Specifically the estimated width value which was
hopelessly wrong for every element I checked. It's easy to measure features
with the measurement tool in JOSM so I think est_width probably should be
ignored unless its checked to be consistently correct for a given area.

 

Cheers

Andy

 

From: Richard Mann [mailto:richard.mann.westoxford at gmail.com] 
Sent: 09 October 2012 16:15
To: talk-gb OSM List (E-mail)
Subject: [Talk-GB] DfT Cycling data - cycle lanes

 

As you may recall, DfT has made available a lot of cycle facility data. This
was processed and snapped to OSM geometry, and has been available for some
months for importing (subject to local review) using the Snapshot tool.
Further details here:
http://wiki.openstreetmap.org/wiki/England_Cycling_Data_project

 

I've reconciled the data for my area, but I found it a bit hard going.
Progress in other areas has been variable.

 

I'm particularly interested in cycle lane data, so I've produced a rendering
that compares DfT (Red) with OSM (Blue) data. Note that the DfT data is not
clear which side of the road cycle lanes are on. 

http://www.transportparadise.co.uk/dftcyclelanes/

 

Quite a lot still missing.

 

So I've also generated tiles of the DfT cycle lane data (down to z17), for
use as a background in editors. In Potlatch, you can create a new background
by clicking on the Background drop-down, then Edit, then Add. The URL for
the tiles is:

http://www.transportparadise.co.uk/dftcyclelanes/tilesDfT/$z/$x/$y.png

 

If any of you care to add cycle lanes in your area, that'd be most welcome.
It will also be interesting to see whether providing a background proves to
be an effective way of getting data reviewed and into OSM. If it's
successful, a similar approach can be used for other parts of the data.

 

Feedback welcome.

 

Richard

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