[Talk-GB] TfL Cycle Infrastructure Database (CID) conflation

[Steven Hirschorn]

Hi Aidan,

Thanks for your efforts, I think it'll be a great addition. I've looked at
a sample of the bike parking and haven't found any issues - neither false
positives or inaccurate positions. I didn't look for any modified existing
nodes. I've noticed that it isn't exhaustive (the first few nodes in the
changeset were of Golden Square but there are some post_hoops missing), but
doesn't claim to be.

With the traffic calming measures, I found an example of cushions listed as
a hump - I don't know if that's a problem in the original source data, or
maybe it's changed since the survey or since the aerial view on Bing was
recorded? I still feel like the distinction isn't that important and that
it's useful to know that there's some kind of traffic calming there even if
the type is incorrect.
https://www.openstreetmap.org/node/10242246942

I'm finding the bigger changeset difficult to analyse as JOSM doesn't make
it obvious what has changed, and it's too big to open in osmcha (and
there's 18 pages of updates to look at via the openstreetmap.org
representation!

Steven

On Tue, 6 Dec 2022 at 12:41, Aidan Mcinerney via Talk-GB <
talk-gb at openstreetmap.org> wrote:

> Hello,
>
> As discussed, we have now imported two example changesets for review
>
> - 44 cycle parking assets from TfL CID inside London ward(s) St.
> James's,West End #tflcid
> https://www.openstreetmap.org/changeset/129780786
>
> - 350 traffic calming assets (humps/cushions) of TfL CID within London
> borough Barking and Dagenham #tflcid
> https://www.openstreetmap.org/changeset/129780689#map=12/51.5530/0.1279
>
> This is aligned to the method proposed, but we would be grateful if you
> are able to advise if there is anything unexpected. All being well, we
> would look to add a few more changesets for these two assets in 7 days.
>
> Many thanks,
>
> Aidan, Lu, Ed
>
>
> From: Aidan Mcinerney via Talk-GB <talk-gb at openstreetmap.org>
> Date: Tuesday, 15 November 2022 at 11:03
> To: talk-gb at openstreetmap.org <talk-gb at openstreetmap.org>
> Subject: [Talk-GB] TfL Cycle Infrastructure Database (CID) conflation
> Hello
>
> Following very helpful feedback earlier in the year, we are now looking to
> recommence efforts to complete the migration of the TfL CID to OSM
>
> In the intervening months, we have been assisted by CycleStreets in
> closing out identified issues with the conversion scripts -
> https://github.com/cyclestreets/tflcid-conversion/issues
>
> We have reviewed and modified the import process to avoid
> editing/importing using out of date info.
> The details of this modification for two initial assets (parking and speed
> bumps) are outlined here -
> https://wiki.openstreetmap.org/wiki/TfL_Cycling_Infrastructure_Database#Modification_to_Process_%28November_2022%29
>
> Hopefuly this is all clear – but please ask questions if not. Should the
> community consensus be to proceed with this approach, we propose importing
> both assets for a single ward next week, allow time (a week?) for review,
> before ramping up to a few more wards the following week. We’re happy to be
> guided by the pace that community members feel appropriate as we go.
>
> We’re very grateful to receive your questions and comments!
>
> Lu (GHD), Ed (Sweco) and Aidan (GHD)
>
>
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> This email is issued by a GHD group company. GHD is a trading name of the
> Gutteridge Haskins & Davey group of companies, which includes the following
> companies (with their respective company numbers): Gutteridge Haskins &
> Davey Limited (05528602); GHD Environment Limited (05221559); GHD Livigunn
> Limited (05661240); Movement Strategies Limited (04925854); Birkett Stevens
> Colman Partnership Limited (02585136); George Hutchison Associates Limited
> (02174512); and Livingston Gunn Projects Limited (02399356), all of which
> have their registered offices at: Level 1, Building 49, Thornton Science
> Park, Pool Lane, Ince, Chester, CH2 4NU, United Kingdom and all of which
> are registered in England and Wales.
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