On Mon, 2009-04-27 at 09:50 -0700, Apollinaris Schoell wrote:
tiger data is that the quality is from excellent to really bad in
accuracy
tiger data is old and contains abandoned roads
tiger has no level info, no direction for oneways, no turn
restrictions, or any other fancy info which we add in osm
all this requires rework for most freeways, but it is good enough
for
lot of residential areas.
As others pointed out the reviewed tag is too crude to mean anything
we can all agree on.
My personal view on TIGER is that it is like GPS tracks on steroids.
GPS tracks are an excellent source of mapping data to help build OSM.
They have good information about where roads are, what their shapes are,
etc... But they generally can't tell you about an intersection's
layout, turn restrictions or other surface features.
But, they can't be relied upon universally. People have bad GPSes, they
also forget to turn off their lock to road feature, etc...
TIGER is a wonderful skeleton on which to build but it along is not a
complete or *good* map.
-- Dave
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