[Talk-ca] Flood Mapping in BC

[Justin Tracey]

The wiki currently recommends tagging construction that is expected to 
last "at least 6 to 9 months".[0] For shorter-term construction or other 
restrictions (e.g., the road was washed out), conditional restrictions 
are intended for precisely this purpose.[0][1]

  - Justin

[0] https://wiki.openstreetmap.org/wiki/Tag:highway%3Dconstruction
[1] https://wiki.openstreetmap.org/wiki/Conditional_restrictions



On 2021-11-17 14:26, Martin Chalifoux via Talk-ca wrote:
> OSM is not designed to map elements that change in time such is traffic, 
> construction. There is no way to set start and end dates to element for 
> example. It is a database that gets *duplicated* in tons of services be 
> it online services that render OSM data, or apps on smartphones, etc. 
> These services take a snapshot and then may not update again for months, 
> a year, who knows. When people put elements that expire quickly, such as 
> maintenance construction (OSM construction tags exists but are designed 
> for new roads being built, not repairs), then there temporary elements 
> are expires and removed, they remain in all the other services. It makes 
> the OSM data unreliable. You add a bit of short time accuracy but even 
> more long time inaccuracy.  Anyhow I presonnaly advocate agains adding 
> broken roads to the OSM database. Road closures are the responsibility 
> of the rendering engines and they must get that info from other sources 
> than the map database and then add it as a layer. OSM is the map layer, 
> then traffic, closures, weather, etc. are better treated as completely 
> independant layers.
> 
> My take anyway, Martin.
> 
> 
> 
>> On Nov 17, 2021, at 13:55, Joel <joel at joelmcfaul.ca 
>> <mailto:joel at joelmcfaul.ca>> wrote:
>>
>> Hi everyone,
>>
>> Numerous major highways have been washed out or blocked due to recent 
>> flooding in BC. Does this community have any thoughts about reflecting 
>> these changes in OSM? I assume most of these closures will be 
>> temporary, however are significant and may last for months.
>>
>> Thank you,
>> Joel
>> _______________________________________________
>> Talk-ca mailing list
>> Talk-ca at openstreetmap.org <mailto:Talk-ca at openstreetmap.org>
>> https://lists.openstreetmap.org/listinfo/talk-ca
> 
> 
> _______________________________________________
> Talk-ca mailing list
> Talk-ca at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/talk-ca
>