Waze
2011-06-07 00:45:11.498029+02 by Dan Lyke 0 comments
Ask any traffic engineer, and they'll tell you the holy grail of traffic management is widespread deployment of in-vehicle (also called "floating car") traffic probes.
Waze does that by trading that information by free turn-by-turn traffic on your phone, and incorporating the traffic data into those directions.
That data's going to be very valuable.