Re: [Talk-GB] Turn Restrictions at roundabouts

Following a lack of answers to questions at http://resultmaps.neis-one.org/osm-discussion-comments?uid=5229644 (in lots of cases they've responded, but have not actually answered the question) with a DWG hat on I've sent them a message that they have to read before continuing to map at

Re: [Talk-GB] Turn Restrictions at roundabouts

Nov 11, 2020, 16:04 by talk-gb@openstreetmap.org: > >After a quick look at his edits locally he has also been removing ref > >tags from roundabouts which seems an odd thing to do. > > This seems perfectly reasonable to me - the roundabout is a junction of > various roads and I do not consider

Re: [Talk-GB] Turn Restrictions at roundabouts

>After a quick look at his edits locally he has also been removing ref >tags from roundabouts which seems an odd thing to do. This seems perfectly reasonable to me - the roundabout is a junction of various roads and I do not consider it to be part of a referenced highway. I note that the wiki

Re: [Talk-GB] Turn Restrictions at roundabouts

On Tue, 2020-11-10 at 11:31 +, Andy Townsend wrote: > On 10/11/2020 10:55, Jon Pennycook wrote: > > Returning to this subject, but not necessarily at roundabouts - > > turn > > restrictions are still being added even where they don't exist > > (apparently) - e.g. > >

Re: [Talk-GB] Turn Restrictions at roundabouts

On 10/11/2020 10:55, Jon Pennycook wrote: Returning to this subject, but not necessarily at roundabouts - turn restrictions are still being added even where they don't exist (apparently) - e.g. https://www.openstreetmap.org/changeset/93759133

[Talk-GB] Turn Restrictions at roundabouts

Returning to this subject, but not necessarily at roundabouts - turn restrictions are still being added even where they don't exist (apparently) - e.g. https://www.openstreetmap.org/changeset/93759133 and https://www.openstreetmap.org/changeset/93750062

Re: [Talk-GB] Turn Restrictions at roundabouts

Could I suggest that, rather than second-guessing what some putative router might or might not do, people actually try these scenarios with one of the many real-world routers to see if they actually happen? I see an awful lot of "may" and "might" in this thread, together with a liberal

Re: [Talk-GB] Turn Restrictions at roundabouts

Surely OpenStreetMAP is about creating a MAP? The clue is in the name. So you map what's on the ground: 1. Put the flares in the right place (often they are wildly out). 2. If there is a "No U-turn" sign you add it, otherwise you don't. Making a router work properly is a job for the person

Re: [Talk-GB] Turn Restrictions at roundabouts

On 04/10/2020 07:42, Edward Bainton wrote: I've been marking them as false positives as to my mind it's obvious that you wouldn't U-turn there (but equally, it would be legal to do so). You would also probably need a vehicle with a tight turning circle, and a quiet road - so agree it would be

Re: [Talk-GB] Turn Restrictions at roundabouts

I regularly get QA messages about this when I use the "ImproveOSM" in iD - just about every roundabout near me has at least one. I've been marking them as false positives as to my mind it's obvious that you wouldn't U-turn there (but equally, it would be legal to do so). But the points about

Re: [Talk-GB] Turn Restrictions at roundabouts

Hi Dave, Thanks for answering my original router logic question! :-) On 03/10/2020 17:52, Dave F via Talk-GB wrote: I've just tested in JOSM. It flagged no such validation warning. https://www.openstreetmap.org/way/3403352 Interesting - you're right, I couldn't easily reproduce the 'Sharp

Re: [Talk-GB] Turn Restrictions at roundabouts

About the only change I've made in years of mapping 'non-mini' roundabouts is to split the oneway=yes flare 'V' into two segments. JOSM validation started flagging the junction node of the V as too tight a bend, which I suppose makes sense. This is a good example of how routing is

Re: [Talk-GB] Turn Restrictions at roundabouts

On Sat, 2020-10-03 at 18:36 +0200, Colin Smale wrote: > On 2020-10-03 18:16, Tom Hughes via Talk-GB wrote: > > On 03/10/2020 16:57, Philip Barnes wrote: > > > > > > > They are intended to stop this type of routing > > >

Re: [Talk-GB] Turn Restrictions at roundabouts

On 2020-10-03 18:16, Tom Hughes via Talk-GB wrote: > On 03/10/2020 16:57, Philip Barnes wrote: > >> They are intended to stop this type of routing >> https://www.openstreetmap.org/directions?engine=graphhopper_car=52.64994%2C-1.20491%3B52.64983%2C-1.2049 >> >> Which is techincally not illegal

Re: [Talk-GB] Turn Restrictions at roundabouts

On 03/10/2020 16:57, Philip Barnes wrote: They are intended to stop this type of routing https://www.openstreetmap.org/directions?engine=graphhopper_car=52.64994%2C-1.20491%3B52.64983%2C-1.2049 Which is techincally not illegal and in real world usage is not going to happen. But unless the

Re: [Talk-GB] Turn Restrictions at roundabouts

On Sat, 2020-10-03 at 16:50 +0100, Tom Hughes via Talk-GB wrote: > On 03/10/2020 14:05, Brian Prangle wrote: > > > There seems to be a predilection for adding turn restrictions , > > either > > no right rurns or no U turns at the exit flares of roundabouts to > > prevent turning back into the

Re: [Talk-GB] Turn Restrictions at roundabouts

Hi, On 03/10/2020 14:05, Brian Prangle wrote: There seems to be a predilection for adding turn restrictions , either no right rurns or no U turns at the exit flares of roundabouts to prevent turning back into the entry flares where there are no explicit signed restrictions. I suspect this is

Re: [Talk-GB] Turn Restrictions at roundabouts

On 03/10/2020 14:05, Brian Prangle wrote: There seems to be a predilection for adding turn restrictions , either no right rurns or no U turns at the exit flares of roundabouts to prevent turning back into the entry flares where there are no explicit signed restrictions. I suspect this is

Re: [Talk-GB] Turn Restrictions at roundabouts

Where I've seen them they're on every exit On Sat, 3 Oct 2020, 15:49 Dave F via Talk-GB, wrote: > There is a lot of garbage in OSM due to those creating routers being too > lazy to write a few lines of code, or even use common sense. > > However, in this case I believe it's other contributors

Re: [Talk-GB] Turn Restrictions at roundabouts

There is a lot of garbage in OSM due to those creating routers being too lazy to write a few lines of code, or even use common sense. However, in this case I believe it's other contributors who think, for reasons that escape me, routers require it. Routing software must be of a poor standard

Re: [Talk-GB] Turn Restrictions at roundabouts

On Sat, 2020-10-03 at 14:05 +0100, Brian Prangle wrote: > Hi > > There seems to be a predilection for adding turn restrictions , > either no right rurns or no U turns at the exit flares of roundabouts > to prevent turning back into the entry flares where there are no > explicit signed

[Talk-GB] Turn Restrictions at roundabouts

Hi There seems to be a predilection for adding turn restrictions , either no right rurns or no U turns at the exit flares of roundabouts to prevent turning back into the entry flares where there are no explicit signed restrictions. I suspect this is "rendering for routers". Do routers actually