A map collection system comprising a map server device, and an in-vehicle device that is mounted on a measurement vehicle, wherein the map server device includes: - a software distribution unit configured to distribute, to the in-vehicle device, mapping software to generate map data based on measurement data obtained by the measurement vehicle, and - a map data acquisition unit configured to acquire, from the in-vehicle device, the map data generated by the mapping software, and wherein the measurement vehicle includes: - a software acquisition unit configured to acquire the mapping software from the map server device; - a measurement data acquisition unit configured to acquire the measurement data obtained by the measurement vehicle; - a map data generation unit configured to generate map data by executing the mapping software by using the acquired measurement data as an input, and - a map data provision unit configured to transmit the generated map data to the map server device; wherein the map data generation unit executes the mapping software distributed by the software distribution unit; and wherein the in-vehicle device includes: - a storage unit configured to store the generated map data, and - a map data deletion unit configured to delete the generated map data from the storage unit, when the generated map data is transmitted to the map server device. the map server device includes: - a software distribution unit configured to distribute, to the in-vehicle device, mapping software to generate map data based on measurement data obtained by the measurement vehicle, and - a map data acquisition unit configured to acquire, from the in-vehicle device, the map data generated by the mapping software, - a software distribution unit configured to distribute, to the in-vehicle device, mapping software to generate map data based on measurement data obtained by the measurement vehicle, and - a map data acquisition unit configured to acquire, from the in-vehicle device, the map data generated by the mapping software, and wherein the measurement vehicle includes: - a software acquisition unit configured to acquire the mapping software from the map server device; - a measurement data acquisition unit configured to acquire the measurement data obtained by the measurement vehicle; - a map data generation unit configured to generate map data by executing the mapping software by using the acquired measurement data as an input, and - a map data provision unit configured to transmit the generated map data to the map server device; - a software acquisition unit configured to acquire the mapping software from the map server device; - a measurement data acquisition unit configured to acquire the measurement data obtained by the measurement vehicle; - a map data generation unit configured to generate map data by executing the mapping software by using the acquired measurement data as an input, and - a map data provision unit configured to transmit the generated map data to the map server device; wherein the map data generation unit executes the mapping software distributed by the software distribution unit; and wherein the in-vehicle device includes: - a storage unit configured to store the generated map data, and - a map data deletion unit configured to delete the generated map data from the storage unit, when the generated map data is transmitted to the map server device. - a storage unit configured to store the generated map data, and - a map data deletion unit configured to delete the generated map data from the storage unit, when the generated map data is transmitted to the map server device.