Le 13/09/16 à 20:18, André Pirard a écrit : > On 2016-09-13 18:21, Marc Gemis wrote: >> Hallo, >> >> I was contacted by a mapper from Germany with whom I worked on turn:lanes. >> He has to following question, can someone with local knowledge inform >> us about the road classifications ? I have the impression a lot of >> streets are indeed residential. Feel free to reply in French, I'll >> translate it to English for him. > Hi, > > The overpass map doesn't show Liège but the North of it. > When run, I can't make sense of what I see. > Could you get rid of the nodes? > > In Liège, most of the ways are residential, of course. > You can see not yet mapped buildings by displaying the BE PICC layer. > But, beside surrounding and access motorways, some ways are suitable for > slower, through traffic. > Those are brown on OSM.org and mainly: alongside Meuse and Dérivation, > rue de l'Yser to Ans, N3, N61, N30, N63, N90. (...?) > Notably missing the brown status is N671 for carrying the heavy traffic > in direction Namur. > (The rule is that brown, main National, primary roads are 1 or 2 digits, > but 671 certainly deserves that). > Beside that, there are yellow, secondary wider streets bordered by > buildings like Boulevard de la Sauvenière that can be used for faster > moving inside town but isn't recommended for traveling through. > > I'm not mapping Liège and I don't know every small streets of it > everywhere, but I can comment specifics like N671 if no one else stands > up in this thread. > > Cheers > > André. > > > > >> >> >> [snipped] >> Now I want ask you about another problem. >> Coming from here >> http://forum.mapfactor.com/discussion/comment/13515#Comment_13515 >> I checked Liege to find out the mapping of roads there: >> http://overpass-turbo.eu/s/imn >> My guess is, that unclassified is used wrong there and that is the >> reason for strange routings. My opinion is that unclassified as the >> lowest kind of connecting roads do not end at city borders and have or >> need common connection to same or higher class inside of towns or >> villages. For me routers should avoid residentials and lower as much >> as possible. Do you have any idea to check and correct this in Liege >> to make routing better? >> >> If there are any questions, please ask. >> >> Regards >> Michael aka hurdygurdyman >>
Hi, I had a look at the link in overpass-turbo and it seems to me that it is quite good according to this: http://wiki.openstreetmap.org/wiki/WikiProject_Belgium/Conventions/Highways But I do agree that some road, like En féronstrée (http://www.openstreetmap.org/way/37341977) et Hors Chateau (http://www.openstreetmap.org/way/62360375) or rue de la Régence (http://www.openstreetmap.org/way/281936236), which count a lot of house, could also be considered as "connection to same or higher class inside of towns or villages". But, in the wiki, unclassified road are described as : > Small paved ways, no connecting roads, that typically are located in rural areas. Houses/building are exceptional. And, on the page Tag=highway=unclassified : http://wiki.openstreetmap.org/wiki/Tag:highway%3Dunclassified > The tag highway=unclassified is used for minor public roads typically at the > lowest level of the interconnecting grid network. Unclassified roads have > lower importance in the road network than tertiary roads, and are not > residential streets or agricultural tracks. highway=unclassified should be > used for roads used for local traffic and used to connect other towns, > villages or hamlets. Unclassified roads are considered usable by motor cars. So I wonder if the wikiprojectBelgium is wrong for this description... Julien
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