Map generating server and map generating method

A map generating server capable of bidirectional communication with multiple vehicles, comprising:

• a database configured to store vehicle type identifiers assigned to the vehicles and map data regarding roads usable by the vehicles and a cultivated land area near the roads;
• and
• at least one processor and a memory coupled to the processor;
• wherein the processor is configured to perform:
• accessing the database and writing vehicle position data tagged with a vehicle type identifier to a location concerned of the map data, when each of the vehicles transmits the vehicle position data tagged with the vehicle type identifier assigned to the vehicle;
• incrementing a vehicle position data writing number if the written vehicle position data is the vehicle position data of a vehicle assigned a specified vehicle type identifier, when the vehicle position data is written to the location concerned of the cultivated land area of the map data;
• and
• determining the location concerned of the cultivated land area to be a cultivated land area road and updating the map data stored in the database when the vehicle position data writing number is equal to or greater than a predetermined number.

A map generating method for generating map data regarding roads usable by multiple vehicles and a cultivated land area near the roads, comprising the steps of:

• writing vehicle position data tagged with a vehicle type identifier to a location concerned of the map data, when each of the vehicles transmits the vehicle position data tagged with the vehicle type identifier assigned to the vehicle;
• incrementing a vehicle position data writing number if the written vehicle position data is the vehicle position data of a vehicle assigned a specified vehicle type identifier, when the vehicle position data is written to the location concerned of the cultivated land area of the map data by the step of vehicle position data writing;
• and
• determining the location concerned of the cultivated land area to be a cultivated land area road and updating the map data when the vehicle position data writing number is equal to or greater than a predetermined number.