System for determining traffic metrics of a road network

A traffic analytics system comprising a first datastore and a processing resource, the traffic analytics system configured for:

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