[Tagging] highway=residential_link

[Tod Fitch]

I am pretty sure that I am one of the mappers that have used residential_link as a highway value in cases where there was a separate way for making a right turn from one residential road to another.

If the two roads the connecting way links are tagged as residential I don’t see any other choice than to use residential_link. I don’t think that service works for that (and some routers only allow passage over a service way at the ends of a route so that would mess them up). And tagging it with a higher classification (e.g. tertiary_link) makes no sense to me either.

The only alternative would be to tag it as residential which seems to lose some meaning to me as the ones I can think of are too short to have residences on them.

-Tod
N76 on OSM

> On Nov 9, 2015, at 10:37 PM, Andrew Guertin <andrew.guertin at uvm.edu> wrote:
> 
> A question recently came up as to whether highway=residential_link is a meaningful tag or whether uses of it should be changed to some other value (like highway=residential or highway=service).
> 
> This tag has no description in the wiki, though it is analogous to the other highway=*_link types described on https://wiki.openstreetmap.org/wiki/Highway_link .
> 
> There are only 23 current uses of the tag, but many others were recently removed. By going through (by hand) the recent edits of an editor who removed them, I've come up with a list of 58 more objects that used it [1]. If anyone knows of a programmatic way of finding objects that previously used a tag, I'd be interested to know it.
> 
> Of those 81 current and recent uses that I worked with,
> * They occurred in North America (36), South America (30), Europe (11), and Australia (4)
> * 35 were added in 2015, 38 were added in 2014, and the remaining 8 were added in 2010-2013
> * I count 33 unique users that added the tag
> * 19 of the uses had a value for name="*", 62 did not have a name
> 
> * Of the 36 North American uses, I personally think highway=residential_link makes sense on 16 of them, while 12 should be a higher highway=*_link and 8 should not be a _link at all.
> 
> 
> highway=residential_link is not currently rendered in openstreetmap-carto, and a request for adding it in February 2015 was declined (https://github.com/gravitystorm/openstreetmap-carto/issues/1280), due to low usage and being undocumented. That bug mentions that it is supported in various routing apps, and it WAS supported in the HOT map style until that support was removed recently.
> 
> 
> So the question is, should uses of highway=residential_link be edited away, should they be left as-is (unless a different highway type is clearly better), or should the tag be approved and documented?
> 
> 
> --Andrew
> 
> 
> 
> 
> 
> [1] Objects that previously used highway=residential_link. This list was generated by hand, and might have some mistakes. Also, not all of these necessarily should have used the tag.
> 
> 275610032, 275610033, 275610026, 275610025, 275355353, 269193467, 268796394, 262798921, 262715792, 262287021, 259433293, 259433291, 259136210, 256321591, 256321612, 256256231, 82529183, 256250694, 256250692, 255858772, 255734560, 255734548, 255734547, 255734546, 255285030, 255282915, 255282916, 242373220, 240563513, 238260570, 237128774, 222995985, 318225690, 219160095, 200773019, 191613798, 183497432, 174739362, 174739436, 173790274, 152304285, 95348547, 87908508, 87908510, 87908507, 83285340, 54356292, 54356293, 45812108, 45812107, 39722340, 35248433, 148015236, 35242001, 35121698, 35121488, 18820600, 6086632, 6107802,
> 
> 
> 
> On 11/09/2015 01:39 AM, GerdP wrote:
>> I think this should really be discussed in the tagging list.
>> I only know a discussion in Germany which came to the
>> conclusion that tags like unclassified_link, residential_link and
>> service_link make not much sense:
>> http://forum.openstreetmap.org/viewtopic.php?id=26083
>> The wiki doesn't mention those _link types as well, and my
>> understanding is that only major roads have a link (if link
>> in english means what we call "Abfahrt/ Auffahrt" in Germany,
>> I would describe it as a lane that allows to decrease/increase
>> speed.
> 
> 
> 
> _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging