[talk-au] Tagging Asset ID's (bridges as a priority)

[Phil Wyatt]

Thanks Andrew, great answer!


Cheers - Phil, 
On the road with his iPad 

> On 14 Apr 2021, at 7:40 pm, Andrew Harvey <andrew.harvey4 at gmail.com> wrote:
> 
> 
> Other replies already alluded to this, but the bridge is often mapped as an area like at https://www.openstreetmap.org/way/604254012 with man_made=bridge. This allows you to tag all the attributes of the bridge distinct from the road way which crosses the bridge. eg. name=* and ref=*.
> 
> On the main road way like https://www.openstreetmap.org/way/52981128 (but also in this case each of the cyleways that are part of the same bridge, the bridge reference would then be bridge:ref= as ref= would refer to the road reference not the bridge reference.
> 
> Yes this results in duplicate information tagged on both the highway=* way and man_made=bridge area but it makes it easier for data consumers this way, otherwise you need to do spatial intersection tests.
> 
> While smaller bridges won't have a man_made=bridge mapped out, over time as the map improves they would be added.
> 
> It also helps determine, for example in the Merimbula Lake Bridge case, if there is one bridge that the road and cycleways share, or there is a road bridge and then two seperate bridges for the cycleways adjacent. Tagging man_made=bridge makes it clear (again through a spatial intersect) that there is just a single bridge, whereas without it, it would be unclear.
> 
> I think the ref=* tag on man_made=bridge, and bridge:ref=* tag on highway=* is the way to go.
> 
> Bob for your case I'd go with aeroway:ref=* for the airstrip reference, leaving ref=* for the road reference.
> 
>> On Wed, 14 Apr 2021 at 16:48, Andrew Hughes <ahhughes at gmail.com> wrote:
>> Hi All,
>> 
>> I've found an appropriate tag of bridge:name and have applied it to the bridge: https://www.openstreetmap.org/search?query=Merimbula%20Lake%20Bridge
>> 
>> But I also know this bridge has an asset id of "BID7" for the asset owner. These asset id's are frequently referenced within the transport industry and I believe they would be beneficial to OSM.However, I can't see anyway of adding an ID to the bridge (or any other asset for that matter). 
>> 
>> Furthermore, being able to search by the asset id using nominatim would also be highly desirable - just as searching for the bridge name works a treat! So if there's any potential there it would be great.
>> 
>> Any advice would be appreciated.
>> 
>> Thanks in advance Andrew
>> 
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