[Shop-talk] GPS experiences ?

[Chris Kantarjiev]

It used to be that you bought TeleAtlas maps for coverage and NAVTEQ
for details - TeleAtlas had coverage of most of the US, but there were
lots of mistakes. NAVTEQ had very high accuracy in the top 200 urban/suburban
area, and no coverage in between.

They have been converging, slowly. TA pricing is easier to swallow
than NAVTEQ in most cases, though that has been changing, too.

TA does most of their map updating with software - they do automatic
scanning of geometry from aerial photos. NAVTEQ does it the old-fashioned
way, by driving and taking GPS traces.

It's hard to say which is "better" these days.