[RobM]

In Pittsburgh, I've found it to be very accurate on roads where there are electronic sensors. There might be a slight delay until it is updated like 5-10 minutes. On the roads where there are no sensors, the information is not present. So basically, the NAV has routed me right into more traffic than if I just stayed my course. I'm still learning how the system reacts--if it tells me not to exit, that might be the best way. (Versus not knowing if exiting is best)