[OSM-talk] Outperforming TomTom

[Russ Nelson]

Martin Koppenhoefer writes:
 > there are also other approaches in the pipeline (for years actually),
 > sensor networks in the cars,

New York City is surrounded by bridges and tunnels that practically
require you to have an E-ZPass. They have transponders which will read
your E-ZPass just for identification purposes. They use that
information to report on congestion within the city. According to the
maker of the transponder, they keep a hash of the identification
number, and throw it away as soon as they have calculated the speed.

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