Garmin Guidance 3.0 is most advanced navigation engine developed by by Garmin R&D team. It includes all the features of Guidance 2.0 plus predictive routing and the world’s best traffic avoidance system to make everyday driving easier. Digital 3D Traffic provides traffic updates every 30 seconds, which is 4–10 times faster than other traffic systems on the market. Guidance 3.0 is featured on nüvi 3400 series personal navigators.
Garmin Guidance 3.0 includes all the features of Guidance 2.0 plus:
Garmin Guidance 2.0 includes:
Source: Garmin official site