Method for determining traffic metrics of a road network

A method for providing traffic metrics for a first intersection of a road network comprising:

• providing first road network data indicating a first plurality of road network subzones defining an area occupied by the road network, the road network including a plurality of intersections;
• processing first road network data for labelling each road network subzone as one of a core subzone and non-core subzone for forming a first plurality of core subzones and a first plurality of non-core subzones, respectively, and storing an indication thereof in the first road network data;
• mapping each of the first plurality of core subzones to an intersection of the plurality of intersections of the road network and storing an indication thereof in the first road network data, the first plurality of core subzones including a plurality;
• forming a plurality of subsets of core subzones of the first plurality of core subzones, each thereof defining a geographic area occupied by an intersection core of an intersection of the plurality of intersections of the road network;
• processing first road network data for mapping each non-core subzone of the first plurality of non-core subzones to at least an intersection of the plurality of intersections of the road network;
• forming second road network data including the first road network data and an indication of the at least an intersection of the plurality of intersections of the road network each non-core subzone of the first plurality of non-core subzones is mapped
• forming trip metadata dependent on second road network data and third vehicle data corresponding to the first plurality of road network subzones;
• and
• processing trip metadata associated with the first intersection for forming traffic metrics data indicative of intersection metrics for the first intersection.