I need to commute everyday through New York City and it be imperative to know the real-time traffic since traffic can be bad and unpredictable . this gp have work pretty well most of the time . I sometimes look at Google map for real-time traffic update and try to come up with my own route and it usually match the route calculate by gp . the only time that the gp do not work be when Google map show that the traffic have clear on Washington bridge and this gp still direct to avoid it . overall it be a good product to use for people who need to drive through unpredictable traffic but with alternative route . though I would say that combine google map and this gp would be even better .