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

Thu Jan 19 11:03:55 UTC 2023

In this case, there was an 11-day gap.

https://www.openstreetmap.org/way/12704978/history#map=18/51.52507/0.04240
 * Versions #7, #8 and #9 of Frinton Road - all 2022-12-12 - changeset comments implying a general update of the area, mostly to add streetside trees
 * Version #10 - 2022-12-23 - added the TfL assets.

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

On Thu, 19 Jan 2023, at 10:50 AM, Steven Hirschorn wrote:
> Out of curiosity, Ken, were the affected roads realigned in the days before the TfL changes were applied?
> 
> On Thu, 19 Jan 2023, 10:41 Ken Kilfedder, <spiregrain_osm at ksglp.org.uk> wrote:
>> Have a look at the alignment of :
>> * https://www.openstreetmap.org/node/10282554742
>> * https://www.openstreetmap.org/node/10282561555
>> * https://www.openstreetmap.org/node/10282561767
>> * https://www.openstreetmap.org/node/10282561651 (on Henniker Gardns, which has previously been mentioned)
>> * https://www.openstreetmap.org/node/10282506906
>> 
>> I've found these by eyeballing the area on osm.org, and looking for crooked roads.   In every case there is a ref:GB:tflcid node in each incorrect bend.   
>> 
>> I have not carried out any checks in other areas, or carried out any sophisticated searches looking for new ref:GB:tflcid nodes that coincide with bends.   So the above list is probably non-exhaustive.
>> 
>> ---
>> https://hdyc.neis-one.org/?spiregrain
>> spiregrain_osm at ksglp.org.uk
>> 
>> On Thu, 19 Jan 2023, at 10:16 AM, Aidan Mcinerney wrote:
>> > Hi Ken
>> >
>> > apologies - we've endeavored to tidy up all the instances we could see. 
>> > could you please give a couple of examples?
>> >
>> > Many thanks,
>> > Aidan
>> >
>> >
>> >
>> > From: Ken Kilfedder <spiregrain_osm at ksglp.org.uk>
>> > Sent: Thursday, January 19, 2023 9:57 AM
>> > To: Whittaker, Ed <ed.whittaker at sweco.co.uk>; Dave F via Talk-GB 
>> > <talk-gb at openstreetmap.org>
>> > Subject: Re: [Talk-GB] TfL Cycle Infrastructure Database (CID) 
>> > conflation
>> >
>> > [You don't often get email from spiregrain_osm at ksglp.org.uk. Learn why 
>> > this is important at https://aka.ms/LearnAboutSenderIdentification ]
>> >
>> > Any update on this?   I can see some of the wobbly roads have been 
>> > fixed - though not all.
>> >
>> > Have you done all you can?  E.g. does it now fall to local mappers to 
>> > find and fix the problems?   Or does Sweco still plan to do it?
>> >
>> > ---
>> > https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdyc.neis-one.org%2F%3Fspiregrain&data=05%7C01%7Caidan.mcinerney%40ghd.com%7C2c66cff4c5884d445eb108dafa03e2af%7C5e4e864c3b824180a5155c8fb718fff8%7C0%7C0%7C638097191951963359%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=oG6%2BleiR7HQIaT%2FycdwCJkp38TBcb18QKsLV9LC8Bbs%3D&reserved=0
>> > spiregrain_osm at ksglp.org.uk
>> >
>> > On Fri, 6 Jan 2023, at 3:03 PM, Whittaker, Ed via Talk-GB wrote:
>> >> Hi Ken,
>> >>
>> >> I agree, it does not look very good at present... I'll need to chat
>> >> with the person who did that area when they are back Monday next week
>> >> though it initially appears that they had not updated their locally
>> >> cached OSM data in JOSM whilst nearby roads had been re-aligned and
>> >> speed bumps added in the preceding week (some internal process issues
>> >> for us to pick up on there). I've picked some random sample changesets
>> >> and so far it appears an issue restricted to this area. I think the
>> >> easiest way is for us to identify the area and systematically work
>> >> around it, removing any conflated CID speed bumps where existing bumps
>> >> already exist and moving any remaining CID bumps in line with the
>> >> update centreline.
>> >>
>> >> Kind regards
>> >>
>> >> Ed Whittaker
>> >> Principal Transport Planner
>> >> Sweco
>> >>
>> >>
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