Patent ID: 11879748
Assignee: HONDA MOTOR CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A map information system, the system comprising:
at least one vehicle; and
a map server configured to communicate with the vehicle and store a high-precision map,
wherein the vehicle includes:
a turn signal lever sensor configured to detect a turn signal operation by a driver;
an external environment sensor configured to acquire information on surroundings of the vehicle;
an own vehicle position identifying device configured to identify a position of the vehicle; and
a controller connected to the turn signal lever sensor, the own vehicle position identifying device, and the external environment sensor, and configured to transmit, to the map server, the turn signal operation, the position of the vehicle, and the information on the surroundings,
wherein the map server updates the high-precision map based on the information acquired by the external environment sensor when comparing the high-precision map stored in the map server with the turn signal operation and determining that a branching route is present,
wherein the at least one vehicle comprises a plurality of vehicles,
wherein the map server is configured to acquire, from each of the vehicles, the turn signal operation detected by the turn signal lever sensor and the position of the vehicle where the turn signal operation is performed, and determine whether the high-precision map needs to be updated based on the information acquired from each of the vehicles, and
wherein in a case where the high-precision map does not contain a road in a travel direction of one of the vehicles corresponding to the turn signal operation from the position of the one of the vehicles at detection of the turn signal operation, the map server determines whether travel histories of the vehicles after the turn signal operation are consistent with each other with respect to the vehicles traveling in a same travel direction, and
wherein in a case where the travel histories of the vehicles after the turn signal operation are consistent with each other, the map server determines that the high-precision map needs to be updated.