[Tagging] Large, multilane road tagging question

John Willis johnw at mac.com
Thu May 15 14:46:54 UTC 2014

Umm... Isn't this merely the tagging mailing list? I was unaware that sending an email to the list was a form of hijacking in any respect. I didn't steal the subject line... Maybe I'm missing something. 

I will recheck the wiki re lanes. I thought I had understood the basic options, it seems there is more than I realize. 

I will try to undo my incorrect edits. 


Sent from my iPhone

> On May 15, 2014, at 10:55 PM, fly <lowflight66 at googlemail.com> wrote:
> Am 15.05.2014 11:18, schrieb John Willis:> Oops, forgot the link.
> http://www.openstreetmap.org/?mlat=36.40776&mlon=139.32700#map=19/36.40776/139.32700
> And you did hijack another thread.
>> Sent from my iPhone
>>> On May 15, 2014, at 6:14 PM, John Willis <johnw at mac.com> wrote:
>>> I have mapped some complicated intersections using links to represent
> turn lanes and other options in very large intersections. The links are
> connected exactly where they would logically connect one road to the
> other for each direction.
>>> Recently, I have been using Apple's turn by turn directions here in
> Japan (love it), and they seem to represent complicated intersections in
> a similar manner.
>>> Is there a philosophical or practical downside to representing a non-
> motorway in this manner? I am insure of how this effects the validity of
> the data, but for the current renderer, there seems to be no real visual
> issue, besides the arrows.
>>> Looking for feedback.
> -100
> In my town we did revert lots of intersection mapped like this. If you
> want to map lanes please use *:lanes. All explained in the wiki [1].
> If you tag like this a router will not direct you to the appropriate
> lane once you did pass the connection node. Only split highway=* if
> there is a physical barrier in between. E.g. the picture on the wiki
> page above would be still only on OSM way with two lanes in one and
> three lanes in the other direction (forward/backward).
> Cheers fly
> [1] https://wiki.openstreetmap.org/wiki/Lanes
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