I've made it easier for everyone I sent an email to the local police station about the legalities of turning right at the light vs taking the ramp/turning lane. Hopefully they will answer me.
On Mon, Apr 3, 2017 at 1:18 PM, Martijn van Exel <m...@rtijn.org> wrote: > James -- I could not find any OSC / Mapillary imagery at the location of > your example so I took a peek at <<AHEM>> google street view. What I see > there is that the slip road / ramp was (as of Aug 2016 -- temporarily?) > closed to traffic which may very well inform the allowed right turn at the > intersection? Or do you know this to be permanent? In this particular case, > based on the info I have, the _link way should have access=no and indeed no > restriction would be necessary. (Obviously I can't make those edits because > of <<ahem>> above.) > > I'm not saying that there cannot be exceptions to the general rule that > 'when there is a turn ramp one must use it', (and as I said before our team > is not adding these 'implicit' restrictions until we clear this up). What I > am looking for is more clarity (specifically in Canada but in the US also) > as to traffic regulations that would make adding these restrictions not > only valid but also a boost to the quality of OSM data. I would only want > us to add these if there is no confusion regarding correctness and there is > added value to adding them. > > I'm cc-ing the US list as there are very similar traffic situations there > and I'm interested in clarifying the situation there as well. > > Martijn > > > On Apr 3, 2017, at 6:47 AM, James Mast <rickmastfa...@hotmail.com> wrote: > > Martijn, with your example you gave back 3/30 [1], are you 100% sure that > it still might be legal to right turn at the main intersection? It might > be if you haven't been there, even with the slip lane being there. > > Case in point, if you were to have one of your mappers modify this > intersection [2] with a 'no right turn' relation, you would be adding false > information to the OSM database. While there is a 'slip' lane for right > turns, there is overhead signage past that slip lane leaving US-19 saying > that you are allowed to make a right hand turn at the intersection. So, > [3] would be completely legal and would be prevented if a false relation > were to be added here. > > This is just something you can't be 100% sure of without visiting it in > person, or have imagery from something like Mapillary to see it. So, I can > see why Andrew was upset about this. > > -James > > [1] https://www.openstreetmap.org/directions?engine=osrm_ > car&route=40.66610,-111.86760;40.66386,-111.86464#map=18/40. > 66520/-111.86552 > [2] https://www.openstreetmap.org/directions?engine=osrm_ > car&route=40.58570%2C-80.04423%3B40.58680%2C-80.04410# > map=19/40.58625/-80.04431 > [3] https://www.openstreetmap.org/directions?engine=osrm_ > car&route=40.58614%2C-80.04461%3B40.58680%2C-80.04410# > map=19/40.58648/-80.04457 > > ------------------------------ > *From:* Stewart C. Russell <scr...@gmail.com> > *Sent:* Friday, March 31, 2017 7:26:12 PM > *To:* talk-ca@openstreetmap.org > *Subject:* Re: [Talk-ca] Telenav mapping turn restrictions > > On 2017-03-31 04:29 PM, Martijn van Exel wrote: > > … the engine > > may decide, lacking an explicit restriction, to take the non _link turn > > because it's faster even if that is an illegal turn. That is why we need > > these restrictions to be explicit in the data. > > but … but — that's Tagging For The Map, or worse, Tagging To Fix > Software Stupidity. It's explicitly mapping something that's *not* > there, and so is contrary to what we're supposed to map. > > I don't have a problem with it being in Telenav's data, but it doesn't > belong in OSM. > > Stewart > > > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-ca > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-ca > > > > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-ca > > -- 外に遊びに行こう!
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