Updated April 13th, 2010 Inrix were not the first out of the gate to provide traffic information for our navigation systems, either in North America or in Europe, but they've had several high profile wins lately, such as Ford in the US and Navigon and ALK in Europe.
Adding customers is one thing but adding sources to provide the best possible traffic information needs to happen ahead of that and Inrix are relying on millions of "probes". Probes are anonymous drivers who report their speed live from the road. They claim 1.5 million probes with 2 million to be available from Ford too. Now to make good use of them and we are also looking at pro-active reporting by the users. You can use the INRIX Traffic : Power Ford SYNC - Using Probes of the "Traffic Information" forums to discuss.
Updated March 28th, 2007 - Inrix have just released an application for Windows Mobile devices (PDAPhone and Smartphone) that displays real-time and predictive traffic information in 60 markets in the US. Click here for the full PR. While the addition of predictive traffic is an interesting development...
..., unlike the recent off-board mapping related applications with RT trafic offered by Google and Microsoft, it's not free, and they charge a fairly steep $40 per year. Besides, the lack of GPS compatibility will make it mostly useful for people who know the area well. You can use this thread of the "News" forums to discuss.
Updated November 7th, 2005 - Traffic information on GPS systems is certainly the "hot topic" of the moment when it comes to GPS Assisted Navigation with the launch of the ClearChannel FM/RDS TMC broadcasts and their integration in units by Garmin and Cobra (read some first comparisons here) but Smartphones are certainly a "natural" for traffic integration and a new solution by Traffic Vizzion looks interesting......Using a Windows Mobile Smarpthone, you can be alerted of Traffic incidents close to your current GPS position and even view them via Traffic cameras. For the time being they have coverage for 13 metros in the US and 3 in Canada and there is a free trial, so why not give it a try and discuss in this thread of the traffic forums