Patent ID: 8620574
Filing Date: 2013-12-31
Classification: G01C,G08G

Abstract:
1. A method for calculating a quantity for a route segment extending between two points on a digital map, said points corresponding to two geographical locations, said quantity representing a distance between the two geographical locations or an estimated time for travelling between the two geographical locations, said method, performed using at least one processor, comprising: determining a base quantity for said route segment, the route segment corresponding to a road segment extending between the two geographical locations; determining a first parameter corresponding to a first condition of the route segment between the two geographical locations, wherein the first condition corresponds to a traffic flow along the road segment; determining a second parameter corresponding to a second condition of the route segment between the two geographical locations; determining an additional quantity based on a combined effect of said first parameter and said second parameter such that the influence of said second parameter on the size of said additional quantity depends on said first parameter; calculating a modified quantity for said route segment based on said base quantity and said additional quantity; and generating a signal based on said modified quantity.