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

Thu Dec 8 09:47:47 UTC 2022

User BCNorwich deserves a medal or something, any small building overlap errors or geometric twists I commit gets fixed within hours thanks to BCNorwich diligence. 

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https://hdyc.neis-one.org/?spiregrain
spiregrain_osm at ksglp.org.uk

On Wed, 7 Dec 2022, at 5:43 PM, Aidan Mcinerney via Talk-GB wrote:
> Hi Stephen - Thank you for the encouragement and input
>
> Very much take your point about the size of the humps changeset needing 
> to be manageable. It feels like there's a balance we need to find with 
> the size of each changeset vs the number assets we're aiming to bring 
> in - around 26k humps. The position we reached was to restrict each 
> changeset to a max of 350 and kept in a fairly tightly constrained 
> zone. It sounds like reducing this max size is advisable.
>
> You'll now see that the humps changeset has been reverted. Another user 
> (BCNorwich - thank you!) pointed out our method had caused duplication 
> in instances where we have attempted to revise tags on existing assets, 
> so we've reverted this changeset entirely to avoid disruption.
>
> We'll regroup quickly to revise this method and post again to here and 
> the Wiki tomorrow.
>
> Many thanks,
> Aidan
>
> From: Steven Hirschorn <steven.hirschorn at gmail.com>
> Sent: Tuesday, December 6, 2022 10:59 PM
> To: Aidan Mcinerney <Aidan.Mcinerney at ghd.com>
> Cc: talk-gb at openstreetmap.org <talk-gb at openstreetmap.org>
> Subject: Re: [Talk-GB] TfL Cycle Infrastructure Database (CID) conflation
>
>
> You don't often get email from steven.hirschorn at gmail.com. Learn why 
> this is important
>
> 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 
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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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