Originally Posted by
dmwill
Mostly to try new things and learn, and I have! Thank you for that excellent description of the different maps.
Originally Posted by
dmwill
Secondarily was to see if I can get more accurate heatmap based routing of where people actually go.
The "heatmap" stuff is based on people's recorded rides. The alternative sources for maps don't have this data.
Originally Posted by
dmwill
The Garmin data has tried to send me down roads that aren't roads, across fences into private property, and doesn't seem to know about a rail trail extension here so it keeps yelling U-Turn! U-Turn! until we clear that section and get back to something it knows.
More detail might explain some of this. Garmin is using the same data* (Openstreetmap/OSM) as the alternative sources. The rail trail extension issue seems like the Garmin map isn't as up-to-date.
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* Garmin uses its own data for points-of-interest (POI). Part of this is for "advertising revenue" and part of it is that OSM can be spotty with respect to POIs.