Nokia Maps 2.0 will soon be able to tap into the Real Time Traffic Information (RTTI) service provided by European in-vehicle information specialist ARC Transistance. RTTI currently sends out traffic information specific to 16 European countries.
Nokia said that Maps will using the data to automatically re-route drivers or to provide them with alternative pre-planned routes to their destination. However, RTTI will be offered as a premium service, so you'll have to cough up if you want to use it. Nokia also charges for turn-by-turn guidance, though Maps will plot routes in advance, for free.