Map generation system, map generation device, map generation method, and program

A map generation device, comprising:

• an extraction unit that collects vehicle speed information, which includes at least a speed, acceleration, and deceleration, from a vehicle and that extracts rapid deceleration information, which includes a first location where a rapid deceleration event satisfying predetermined conditions has occurred, and a traveling direction of the vehicle at the time when the rapid deceleration event has occurred from the collected vehicle speed information;
• a storage unit that stores map data;
• a division unit that generates mesh map data by dividing the map data stored in the storage unit into a plurality of meshes in a predetermined size and a predetermined number of divisions;
• and
• an estimation unit that estimates a location that requires caution when the vehicle travels therethrough, as a caution-required place, based on the rapid deceleration information extracted by the extraction unit and the mesh map data generated by the division unit.

A map generation method, comprising:

• a first step in which a map generation device including a storage unit that stores map data collects vehicle speed information, which includes at least a speed, acceleration, and deceleration, from a vehicle and that extracts rapid deceleration information, which includes a first location where a rapid deceleration event satisfying predetermined conditions has occurred, and a traveling direction of the vehicle at the time when the rapid deceleration event has occurred from the collected vehicle speed information;
• a second step of generating mesh map data by dividing the map data stored in the storage unit into a plurality of meshes in a predetermined size and a predetermined number of divisions;
• and
• a third step of estimating a location that requires caution when the vehicle travels therethrough, as a caution-required place, based on the rapid deceleration information extracted in the first step and the mesh map data generated in the second step.

A program causing a computer including a storage unit that stores map data to execute:

• a first step of collecting vehicle speed information, which includes at least a speed, acceleration, and deceleration, from a vehicle and extracting rapid deceleration information, which includes a first location where a rapid deceleration event satisfying predetermined conditions has occurred, and a traveling direction of the vehicle at the time when the rapid deceleration event has occurred from the collected vehicle speed information;
• a second step of generating mesh map data by dividing the map data stored in the storage unit into a plurality of meshes in a predetermined size and a predetermined number of divisions;
• and
• a third step of estimating a location that requires caution when the vehicle travels therethrough, as a caution-required place, based on the rapid deceleration information extracted in the first step and the mesh map data generated in the second step.