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# OpenStreetMap Data | ||
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## Old Imports | ||
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OpenStreetMap (OSM) has a past history of imports, often done way back | ||
when OSM had little highway data. This was a way to bootstrap | ||
navigation, and it mostly worked. | ||
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### TIGER | ||
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### Motor Vehivle Use Map (MVUM) |
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# OpenStreetMap Data | ||
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## Old Imports | ||
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OpenStreetMap (OSM) has a past history of imports, often done way back | ||
when OSM had little highway data. This was a way to bootstrap | ||
navigation, and it mostly worked. | ||
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### TIGER | ||
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Since it was publically available, the data [used by the US Census | ||
Department](https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-geodatabase-file.html) | ||
was imported around 2007. The data is of varying quality, but was | ||
better than nothing. The OSM community has been cleaning up the mess | ||
ever since. More information on the TIGER fixup can be [found | ||
here](https://wiki.openstreetmap.org/wiki/TIGER_fixup). | ||
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An example of the tags added from TIGER: | ||
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<tag k="tiger:name_base" v="75th"/> | ||
<tag k="tiger:name_base_1" v="75th"/> | ||
<tag k="tiger:name_direction_prefix" v="N"/> | ||
<tag k="tiger:name_type" v="St"/> | ||
<tag k="tiger:name_type_1" v="St"/> | ||
<tag k="tiger:cfcc" v="A41"/> | ||
<tag k="tiger:reviewed" v="no"/> | ||
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### Motor Vehivle Use Map (MVUM) | ||
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The MVUM data is highways in national forests, so useful in remote | ||
area not always in TIGER. Or in TIGER but completely wrong. I've seen | ||
roads in TIGER that don't actually exist. All the MVUM data is better | ||
quality as much of the data was mapped by ground-truthing. It has | ||
useful data fields, like is a high clearance vehicle needed, what is | ||
the surface, and other access data like are ATVs allowed ? | ||
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[MVUM)](https://data.fs.usda.gov/geodata/edw/edw_resources/shp/S_USA.Road_MVUM.zip |
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