[Tagging] [Talk-us] Trunk VS primary

[Mateusz Konieczny]

21 Dec 2019, 12:56 by ajt1047 at gmail.com:

> On 21/12/2019 11:40, Mateusz Konieczny      wrote:
>
>>
>> 21 Dec 2019, 12:00 by >> wolfgang at lyxys.ka.sub.org>> :
>>
>>> I suggest to keep the road classification consistent at          least within
>>> a country and try to solve the problem of roads in low-zoom          maps at
>>> the rendering level, by modifying the list of displayed          road classes
>>> until a target density of displayed roads is reached. That          might
>>> become easier to do when we move to vector tiles.
>>>
>> Seems not doable with OSM data - this
>> would require far more road classes
>> than we use.
>>
>> lane and surface data is also almost
>> certainly not helpful here even with full
>> coverage
>>
>
> Renderers can certainly use tags other than "highway" when      deciding what road class to render things as
>
>
I know, that is why I mentioned 
lane and surface tags
>
> Specifically, if a tertiary is particular narrow it gets rendered      as unclassified, and if an unclassified or residential is a gravel      track it gets rendered as a track with public access.
>
>
OSM Carto is using access tag in
this way. It works well for zoomed in
view but gets more problematic for
country level views or global ones.
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