Asking OSM mappers if they have "strict standards" on this issue is chasing a fantasy, IMHO. We discussed this in our local Thailand mapping forum and AFAIK, it wasn't resolved. In one example, a five-lane highway with no physical barrier and the "fifth lane" painted with big yellow stripes, the mapper used two separate ways, both tagged oneway=yes to represent the situation. I disagreed. My thinking is that OSM prefers having a physical barrier before tagging two separate ways and I do too. By the way, Google maps uses two lanes both tagged as oneway for this particular example.
YMMV On Thu, Oct 10, 2019 at 1:40 PM Frederik Ramm <[email protected]> wrote: > Hi, > > DWG has been asked to mediate in a user dispute in Germany where a local > mapper has chosen to represent a busy four-lane primary highway (two > lanes in each direction, and a double continuous line painted in the > middle which is physically possible but legally not allowed to cross). > > Other mappers object to this saying that it violates the rule that there > must be some sort of physical division to allow that form of mapping. > > The original mapper claims that using two separate oneway=yes ways is > clearer and easier, as it does away with the need for turn restrictions > at junctions. Other mappers claim that the two-separate-way mapping is > violating rules and that OSM will soon become unusable if everyone maps > how they want. > > The question is basically two-fold; one, what are the established > standards and rules concerning this situation, and two, in how far is it > acceptable to deviate from these standards if a local mapper thinks it > is a good idea. > > Personally I believe that "physical division => separate ways; no > physical division => shared way" is the standard in OSM, or perhaps at > least the "rule of thumb". But (since people in the German discussion > have more or less claimed that the world is going to end if local > mappers are allowed to treat this differently) I'd like to hear from > mappers in other countries how rigidly this standard is applied. Is it > something where local mappers have some freedom of judgment (like when > choosing which highway=* category to apply to a road) or do you have > strict standards and definitions? > > Bye > Frederik > > -- > Frederik Ramm ## eMail [email protected] ## N49°00'09" E008°23'33" > > _______________________________________________ > Tagging mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/tagging > -- Dave Swarthout Homer, Alaska Chiang Mai, Thailand Travel Blog at http://dswarthout.blogspot.com
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