Patent ID: 8700327
Filing Date: 2014-04-15
Classification: G01C,G08G

Abstract:
1. A method of providing navigation information for a motor vehicle including a navigation system having an electronic control unit, comprising the steps of: retrieving, by the electronic control unit in the navigation system, a current route that is being used to navigate the motor vehicle to a destination; receiving, by the electronic control unit in the navigation system, a current location for the motor vehicle; calculating, by the electronic control unit in the navigation system, an alternative route from the current location to the destination, wherein a first travel time between the current location and the destination along the alternative route is estimated to be less than a second travel time between the current location and the destination along the current route; determining, by the electronic control unit in the navigation system, a first distance corresponding to the alternative route and a second distance corresponding to the distance left to travel on the current route; calculating, by the electronic control unit in the navigation system, a dynamic threshold value that changes as a function of one or more inputs that change as the motor vehicle travels towards the destination; wherein all the foregoing steps are executed by the electronic control unit in the navigation system as the motor vehicle is travelling along the current route towards the destination; and using, by the electronic control unit in the navigation system, the dynamic threshold value, the first distance, the second distance, the first travel time and the second travel time to determine if the alternative route should be displayed for the user.