Driving assistance system, route guidance system, driving assistance method, and driving assistance program

A route guidance system capable of communicating with a driving assistance system that creates a driving assistance plan for allowing a vehicle to travel on a planned travel route based on driving assistance map data, the route guidance system comprising:

• a processor programmed to:
• search for a planned travel route of a vehicle based on route guidance map data, the route guidance map data being a different type of map data from the driving assistance map data;
• provide guidance on the planned travel route;
• output the planned travel route to the driving assistance system;
• and
• accept version information indicating, for each mesh through which the planned travel route passes, the version of the driving assistance map data;
• for each mesh through which the planned travel route passes:
• compare the version information of the driving assistance map data for the mesh with version information for a corresponding mesh in the route guidance map data;
• and
• obtain, when the version information of the route guidance map data for the mesh does not match the version information for the corresponding mesh in the route guidance map data, route guidance map data having a version that matches the version information of the driving assistance map data for the mesh.

A driving assistance method performed by a driving assistance system capable of communicating with a route guidance system that searches for a planned travel route of a vehicle based on route guidance map data and provides guidance on the planned travel route, the driving assistance method comprising:

• accepting as input:
• the planned travel route from the route guidance system;
• and
• version information indicating, for each mesh through which the planned travel route indicated by the route information passes, the version of the route guidance map data;
• providing driving assistance of the vehicle on the planned travel route, based on driving assistance map data the driving assistance map data being a different type of map data from the route guidance map data;
• and
• for each mesh through which the planned travel route indicated by the route information passes:
• comparing the version information of the route guidance map data for the mesh with version information for a corresponding mesh in the driving assistance map data;
• and
• obtaining, when the version information of the route guidance map data for the mesh does not match the version information for the corresponding mesh in the driving assistance map data, driving assistance map data having a version that matches the version information of the route guidance map data for the mesh.

A computer-readable recording medium storing a driving assistance program causing a computer to function as a driving assistance system capable of communicating with a route guidance system that searches for a planned travel route of a vehicle based on route guidance map data and provides guidance on the planned travel route, the driving assistance program causing the computer to perform functions comprising:

• accepting as input:
• the planned travel route from the route guidance system;
• and
• version information indicating, for each mesh through which the planned travel route indicated by the route information passes, the version of the route guidance map data;
• providing driving assistance of the vehicle on the planned travel route, based on driving assistance map data the driving assistance map data being a different type of map data from the route guidance map data;
• and
• for each mesh through which the planned travel route indicated by the route information passes:
• comparing the version information of the route guidance map data for the mesh with version information for a corresponding mesh in the driving assistance map data;
• and
• obtaining, when the version information of the route guidance map data for the mesh does not match the version information for the corresponding mesh in the driving assistance map data, driving assistance map data having a version that matches the version information of the route guidance map data for the mesh.