, Navigation on the phone via GPS or A-GPS is now almost old hat, both on the iPhone and Android smartphones. Otherwise it looks already with the traffic forecast. TomTom HD traffic offers a solution with the name, can be linked with the existing navigation program for €29.99 per year. For this, the program offers a highly secure storage forecast that predicts traffic jams with various factors. In addition to Vodafone now also O2 provides the location data from mobile phones anonymously. Vehicle fleets are also en route, that also provide data, when the traffic is thick and sticky. In addition external data are evaluated by other navigation devices and classic TMC data, to meet every 2 minutes a safe prediction, which back roads and highways should avoid.