Understanding the map - OSM-Carto map reading Q&A

Case example collection for SotM 2021 workshop Understanding the map - OSM-Carto map reading Q&A (https://pretalx.com/sotm2021/talk/7SUKCQ/).

See https://wiki.openstreetmap.org/wiki/User:Imagico/Understanding_the_map_SotM2021 for an alternative version of this list and more detailed explanations.

Case Examples:

Please enter case examples below here - see the sample entries of how to do so. For easy management please always add new entries at the bottom. You are welcome to ask anything related to the style - however i am going to pick those case examples i consider most interesting for a wider audience to discuss in the workshop. You are also welcome to indicate your interest in case examples added by others by adding your signature to those.

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   * Map link: https://www.openstreetmap.org/#map=17/47.76963/7.38186
   * Topic of interest here: Urban landuses (residential, commercial, retail, industrial)
   * Submitted by: Imagico
   * Users also interested in this: add your signature/user template here
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   * Map link: https://www.openstreetmap.org/#map=17/51.59433/0.03429
   * Topic of interest here: Road layering
   * Submitted by: Imagico
   * Users also interested in this: add your signature/user template here
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   * Map link: https://www.openstreetmap.org/#map=18/53.42354/-4.36735
   * Topic of interest here: Coastlines, high & low water marks, natural features in the inter-tidal zone, boundaries on coastlines
   * Submitted by: SK53
   * Users also interested in this: add your signature/user template here
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   * Map link: https://www.openstreetmap.org/#map=15/50.8950/14.3041
   * Topic of interest here: Rendering of stones, cliffs. What is relevant for cartography?
   * Submitted by: lonvia
   * Users also interested in this: ...
 
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   * Map link: general
   * Topic of interest here: Converting to Vector Tiles & Cartography ; What is the main blocking problems .. 
   * Submitted by: Anonym
   * Users also interested in this: ...
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   * Map link: https://www.openstreetmap.org/#map=11/-22.3002/132.9837
   * Topic of interest here: "There is nothing there". In very remote/low population areas, features such as tracks become  very important at low zoom levels (as in this example). But that is not generalisable. Any thoughts?
   * Submitted by: MichaelCollinson
Users also interested in this:

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   * Map link: https://www.openstreetmap.org/#map=11/14.7224/-0.3502
   * Topic of interest here: from z11 to z12, map switch from empty to detailed due to the display of unclassified roads, tracks and place names
   * Submitted by: SeverinGeo
   * Users also interested in this: ...

MichaelCollinson: this map: https://wikimap.wiki/?base=map&lat=0.0000&lon=-0.0000&showAll=true&wiki=enwiki&zoom=3 uses the same concept. it requieres a lot of preprocessing, giving aevery coordinate a weight based on density. you could adapt the calculation to ... well, calculate an isolation level and render based on that.

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It is possible to sho the "Null island"  in the Map?
https://www.openstreetmap.org/node/3815077900#map=19/-0.00020/-0.00012&layers=D
https://www.ndbc.noaa.gov/station_page.php?station=13010

you mean, the buoy? 
Yes!
I guess you can just add that...
the data is there, just not rendered. if we render that buoy, we have to render them all... or maybe all man_made=monitoring_station... I don't think so
OTOH, I would bring that up as a issue on the style
- Thanks!- 

Is it a deliberate decision not to draw zebra (and other) crossings on top of the roads they cross?
 
osm.fr does it
answered in another way: open an issue

is this recorded?

it was experimentally recorded by the SotM team - they're not making any promises :)
There also might be some private recordings