[Talk-GB] TfL Cycling Infrastructure Database

[Martin Lucas-Smith - CycleStreets]

On Fri, 10 May 2019, Jez Nicholson wrote:

> Their data is highly accurate,

Yes, that seems to me as well to be the case. We're just awaiting more 
images to be uploaded to the site (every feature has two images, but not 
all are GDPR-cleared yet).

I'd welcome as many eyes as possible on the sample data to get a good 
assessment of the data quality.
https://tflcid.cyclestreets.net/


> and there's definitely going to need to be some clever conflation 
> tooling. Bike stands are fine, but advance stop lines, etc. are 
> specialist subjects in my book. I'm sightly overawed by the quantity and 
> am unsure whether volunteers are going to be able to get through it, but 
> again that is something you'll be talking about in your report, no?

Yes, that will be a key issue. Bear in mind that the sample data is only 
one of *25* areas, so there's a lot of data.

Clearly, pre-translations in the data to convert the CID schema to OSM 
tagging would remove a lot of manual work, and a conflation tool could work 
on a similar basis to the England Cycling Data project tool [1]. I think 
there's scope for some pre-processing (e.g. eliminating locations in the 
CID data that clearly already exist in OSM based on a nearness search), and 
the ability for multiple features to be done at once, e.g. a screen where 
say 10-20 cycle parking locations could be reviewed at once. Again, views 
on this would be extremely welcome.


> There would need to be some tool development regardless of who does the 
> conflation.

Indeed. I'd welcome pointers to up-to-date information on the state of such 
tools at the moment, e.g. the JOSM tool, and other developments currently 
happening.


[1] See images on: 
https://wiki.openstreetmap.org/wiki/England_Cycling_Data_project



Martin,                     **  CycleStreets - For Cyclists, By Cyclists
Developer, CycleStreets     **  https://www.cyclestreets.net/