[OSM-talk] [Talk-us] Karlruhe Scheme addressing ways from 2009 TIGER data

[Apollinaris Schoell]

>
> TIGER is an incredibly huge data set.  It comes from what may be the
> most diverse set of primary sources of anything in the world short of
> OSM itself.
>
> It shouldn't be trusted explicitly (no single map should).  Do you  
> have
> some more constructive information about places where you've found  
> it to
> be inaccurate?
>

the problem is Tiger contains tons of dead data. I can send you  
pictures of roads you cant find without gps anymore. single roads  
completely misaligned. whole areas shifted.
As you write on top it's a compilation from many sources and  
incredibly precise in other places. I and some others checked PD data  
from Santa Cruz county and even the official disclaimer tells it's  
highly inaccurate in rural areas. Still Google has imported it down to  
parcel data. How can anyone expect better data from Tiger if official  
county data is off?
In some places around Tahoe my navi (Teleatlas data) jumped all time  
to the next parallel road. Comparing with osm showed why. Same bad  
data … list is endless.



> -- Dave
>
>
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