The suggestion is not that Primary / secondary / tertiary should not be mapped, often when the HOT mappers start the major highways are tagged Primary / secondary / tertiary the suggestion is to simplify guidance to new or inexperienced mappers. 76% of HOT Nepal mappers mapped for an hour or two and that was it.
I don't think we can afford to give them four hours training in how to classify a road, there would be no time left for mapping. For these sort of highways then map something and let someone else upgrade the tag to Primary / secondary / tertiary is my suggestion. Cheerio John On 16 July 2015 at 08:55, Robert Banick <rban...@gmail.com> wrote: > Hey all, > > Speaking as a humanitarian GISer who's used HOT road layers quite a bit in > a few crises, the road classifications really help. Primary / secondary / > tertiary are useful, albeit vey incomplete, measures of the importance of > roads that we can use to eyeball transit times etc. I would be strongly > against ignoring those classification tags. I do agree we need more > consistency in how they're applied however. > > Perhaps we can have general regional guidelines and then someone gets > charged with developing a country-specific taxonomy for any major > activations? > > Best, > Robert > > On Thu, Jul 16, 2015 at 8:44 AM, john whelan <jwhelan0...@gmail.com> > wrote: > >> Given that HOT mappers often do not have a PhD in African road >> classification and it appears to be subjective perhaps we can come up with >> a useful simplified interpretation or guidelines for inexperienced mappers? >> >> My thoughts would be to suggest that mappers in general ignore primary, >> secondary, tertiary, classifications, if the road is mapped then a local or >> classification specialist can tag with one of these if required. >> >> Cheerio John >> >> On 16 July 2015 at 00:23, Thomas Gertin <tger...@gmail.com> wrote: >> >>> I am adding to the discussion of highway tagging in West Africa. All of >>> the projects that mapped highways in West Africa that I have seen or been a >>> part of followed the guidance of the Highway Tag Africa wiki page ( >>> http://wiki.openstreetmap.org/wiki/Highway_Tag_Africa). >>> >>> This past Spring I worked with some colleagues to create this tracing >>> guide (http://hotosm.github.io/tracing-guides/guide/liberia.html) for >>> mapping River Cress and Grand Gedeh Counties in West Africa. The tracing >>> guide was based on our interpretation of the Highway Tag Africa wiki page. >>> This tracing guide is quite good, and mappers appreciated the pictures and >>> GIFs that show examples. >>> >>> When building the tracing guide I came to a few conclusions. When >>> reading the Highway Tag Africa wiki page I felt it have been wrong for me >>> to alter the instructions. It would have resulted in inconsistent tagging >>> in the region. I trust that a good amount of research and discussion has >>> taken place to get it to the point it is now. >>> >>> - The guidance in the wiki could have been clearer. Although I notice >>> that is has improved since even a few months ago, there are now some >>> example pictures in there. >>> >>> - It is difficult to teach someone how to classify highways. There are >>> eight types and often it is not clear when deciding between primary, >>> secondary, tertiary, and unclassified highways because the only difference >>> between them is the subjective size of the urban areas that are connected >>> by them. >>> >>> - The unclassified road type was unintuitive the first time I read the >>> Highway Tag Africa wiki page. To me unclassified means something that has >>> no classification. Yet in the Highway Tag Africa wiki page it clearly has a >>> classification. I think the term ‘unclassified’ means something else in >>> other places though. >>> >>> I think having pre-set tags available as a plugins to iD editor should >>> be a HOT goal, if it isn’t already. I don’t think we need there to be a >>> universal tagging set. People who set-up projects on the Tasking manager >>> could define the tags that fit best for the project. Although I think it >>> would be useful to further standardize some tags across many geographical >>> areas; it is important to maintain the flexibility for the geographical >>> areas that need unique tags. >>> >>> Thanks, >>> Tom G >>> >>> _______________________________________________ >>> HOT mailing list >>> HOT@openstreetmap.org >>> https://lists.openstreetmap.org/listinfo/hot >>> >>> >> >> _______________________________________________ >> HOT mailing list >> HOT@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/hot >> >> >
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