On Sun, May 21, 2017 at 8:46 PM, Mark Wagner <mark+...@carnildo.com> wrote:
> On Sun, 21 May 2017 22:23:12 +0900 > John Willis <jo...@mac.com> wrote: > > > > Warning signs - not restriction signs - such as stop ahead, curve > > ahead, falling rock, animals, etc do present a chance for the > > presence of the sign's node to offer a notice to whatever is parsing > > the way Data and present that to the driver/user when in proximity to > > said warning. > > > > "Stop ahead" signs in Japan are really strong in some places > > because perpendicular roads meet in rice fields where people may be > > used to being on the road with others stopping for them. Having the > > mapped sign *could* be beneficial to a way because the warning is > > usually for that spot. > > > > https://www.flickr.com/photos/javbw/11091338426/in/album- > 72157638113676925/ > > > > (To-ma-re, like putting S-T-O-P on 4 signs before the triangle-shaped > > stop sign) > > > > But even that could be a property of the way rather than inferred by > > the point proximity of the sign (because I assume the sign node will > > be placed with precision not where it is actually located, rather > > than on road's way, because this is micromapping, after all) > > This use of warning signs runs into the problem that data consumers > don't have a good way of figuring out which signs go with which > directions of which roads. Yes, the 90% solution is to say "the sign > is associated with the road it is closest to, and the direction of > travel corresponding to the side of the road it is on", but there are > exceptions, both common and unusual. > Node could be in a way. Way has a direction We can use forward and backward keys, and also side=right/left/both to orient the traffic_sign. > > Probably the most common exception in the United States is "no > passing" signs (a common pattern is to have the sign on *both* sides of > the road, so that someone in the process of passing a large truck will > still see it), and the second-most-common is advisory speed limit signs > placed on the outside of the corresponding curve. Various > clarification signs in close proximity to confusing intersections would > have issues with "which road" rather than "which direction". > If the node is in a specific way this sign belongs to that way > > Warning signs are something that data consumers could certainly make > use of, but we need some way of explicitly coding which direction of > which road they apply to. > Is not enough to belong to a specific way or to have it closest? Salut i senyals de trànsit (Good health and traffic signs yopaseopor <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Libre de virus. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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