OpenStreetMap

Turn lane (how to)

Posted by Super-Map on 23 February 2015 in English.

Hi OSM contrubutors, here you can see the result in the software (because on the classic map it isn’t visible with classic layer)

We need to use the key lanes = x (x is the number of way in the both direction) in this case: lanes=4. We indicate the number of lane in the both directions: lanes:backward=2 lanes:forward=2 We need to use the lane on the left road if we want to turn left placement:forward=left_of:1 This is the mark sign indicator on the road turn:lanes:forward=left;through|through;right

Enjoy yourself

http://www.openstreetmap.org/?mlat=48.62716&mlon=2.56464#map=18/48.62716/2.56464

https://i.imgur.com/qDHDy6b.png?1

Of course all can improve it again (my work, my contribution)

P.S.: Don’t forget, it’s for to do a “map” and if we want somebody use it, it’s must be a little bit “pleasant”…). But in the reality, it isn’t a simple map…

Discussion

Comment from escada on 24 February 2015 at 07:11

Since there are 4 lanes, and you positioned the OSM-way in the middle of the 4 lanes, there is no need to add placement:forward=left_of:1. A placement is only needed when the OSM-way is not in the middle of the real road.

Happy lane-mapping from another turn:lane mapper

Comment from Super-Map on 25 February 2015 at 07:28

Hi escada, I’m glad to have a follower with an interesting answer. This is what I think: “in this country “France” we driving on the right side of the road. If we want to turn left, so, we must stay on the left side. Probably you’re right, however I prefer to keep this tag on the road. The key: “placement” is a proposed key, so isn’t really important at this time in OSM project. But the key lanes and turn are “important” for a good understanding, rendering on the map (for to have a nice map). OSM project is very interesting and we must take care of it for the respect of his “designers”… Thanks for your answer, your help. Have a nice week.

Comment from gileri on 25 February 2015 at 17:46

I recently discovered a neat tool that help fixing highways by displaying lanes, turn lanes and destinations, I thought it would be relevant to mention it here :

http://osm.mueschelsoft.de/cgi-bin/render.pl

Comment from Super-Map on 25 February 2015 at 18:33

Hi gileri, thanks for this information who can help the persons who start mapping and not only, the community of OSM, all contributors of this project.

Comment from Super-Map on 25 February 2015 at 19:05

Ok, finally I will deleted the “placement” key as soon as possible. Best regard to all.

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