> mapping the road markings seems extremely strange - what if they are very > faded, when do we map them ? is there a threshold of % of the paint left ? > what is there are no road markings but there are signs ?
I encouraged MapBox to add some of their workflow information to the wiki page.[1] The MapBox team will be the first to tell you that they may not get things right. However, I'd rather follow their lead right now because they are making an effort to improve navigation. I don't see how the questions help with the discussion. I believe that you are asking questions for something that does not exist. 1.The sun beats down on asphalt. That's why I mark a road as surface=asphalt and not surface=paved. Asphalt handles so much differently than concrete. Up north water seeps into the cracks and freezes. This process generates frost heaves, where potholes form in the road. Down here in the land of the sun, the cracks are filled with tar until the point of no return sets in just like frost heaves.[2] The street feels like you are driving on cobble stones. 2.A pavement profiler comes in and removes the asphalt near the sidewalk so there is less of a bump. At this point, the picture shows that the new asphalt was laid down. Note the appropriate safety signs.[3] 3.Days later there's a new glassy smooth road with new lane lines.[4] I don't even bother adding construction tags when a road is being resurfaced. It is over and done too quickly to bother with. > do we remove those tags during the winter in some regions ? The tags stay the same in both good and bad conditions. You have drifted into hyperbole at this point. In the snow filled north and the sunny south, these are still usable roads. It would be useful to know that there are three lanes on a snow packed street when only one is drive-able. The lane count and turn lanes are also useful knowledge when the freeway is flooded and you are looking for an alternate because the street ahead has only two lanes functional piled high with freeway traffic.[5][6] I would rather attempt to add the information for routing rather than have no data. NINO is far worse than the alleged GIGO. The community needs to let mappers attempt to understand the problem and improve upon the knowledge or tagging. My eyes glazed over when I looked at the wiki page. I found sanity to the MapBox workflow.[1] [1] https://github.com/mapbox/mapping/wiki/Mapping-guide-for-turn-lanes-from-imagery [2] http://mapillary.com/map/im/AwRbJa0dDr_RSnnjteTTFA [3] http://mapillary.com/map/im/i40PBdYRIMs7vHttf_SiZg [4] http://mapillary.com/map/im/ZUvJ4et2qVGLC8JJDl43CQ [5] http://mapillary.com/map/im/AbmqIXz9Wi0EQMoLLiSLyg [6] http://mapillary.com/map/im/QHY4gXilNHH2yyp9PEInlA _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us
