[Tagging] tagging large intersections cross-road sections

johnw johnw at mac.com
Tue Jun 23 12:16:22 UTC 2015

OSM is heavily invested in the “lanes” concept for an individual way, so tracing the individual lanes of a road with multiple way lines breaks OSM’s routing (as I understand it) There are plugins for JSOM to let you view the lanes you make. I personally have no idea how to use them or how to map the ways going through an intersection, but I assume there is a way without tracing it lane by lane. it is a weird mix of visual, spatial representation and logical, tag based representation. 


Ramps, and other linking roads that are actually separated - turn only lanes separated by islands, motorway exits and entrance ramps (slip roads?) , and other little roads that connect trunk, primary, secondary, and tertiary roads to other roads are tagged as “xxxx_link” - so it is already possible to map the slip roads for almost any kind of road using the existing highway=xxxx_link 



> On Jun 23, 2015, at 5:34 PM, Florian Lohoff <f at zz.de> wrote:
> Hi,
> I was watching this video on Route Guidance of SOTM US 
> https://www.youtube.com/watch?v=hwglqOV6I9M
> At about Minute 8:10 he talks about multi-lane cross-sections
> and tagging of the short interconnects. I know the Problem with
> the names on them. He says commercial data providers to tag them 
> as beeing parts of the crossing. 
> Do we have tags for this?
> I'd love to improve route guidance by tagging ramps, cross sections etc.
> Flo
> -- 
> Florian Lohoff                                                 f at zz.de
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