System and method for generating navigation instructions

A method of generating navigation instructions, the method comprising:

• retrieving sensor data associated with at least one vehicle travelling along a route having at least one intersection, the sensor data indicating intersection information relating to the at least one intersection, the intersection information comprising at least one of an intersection category and an intersection type;
• retrieving map data associated with the route having the at least one intersection, wherein the map data comprises information from a map database, the map data indicating traffic-related information for a plurality of intersection connected links;
• based on the sensor data and the map data, determining a turn cost correction factor for the at least one intersection;
• and
• storing the turn cost correction factor within the map database.

A computer programmable product comprising a non-transitory computer readable medium having stored thereon computer executable instructions, which when executed by one or more processors, cause the one or more processors to carry out operations for generating navigation instructions, the operations comprising:

• retrieving sensor data associated with at least one vehicle travelling along a route having at least one intersection, the sensor data indicating intersection information relating to the at least one intersection, the intersection information comprising at least one of an intersection category and an intersection type;
• retrieving map data associated with the route having the at least one intersection, wherein the map data comprises information from a map database, the map data indicating traffic-related information for a plurality of intersection connected links;
• based on the sensor data and the map data, determining a turn cost correction factor for the at least one intersection;
• and
• storing the turn cost correction factor within the map database.