Method for generating traffic flow statistical data by using wiper operation information of vehicle, method for calculating estimated time of arrival of vehicle by using traffic flow statistical data generated using wiper operation information of vehicle, and management server used therefor

A management system comprising:

• a plurality of vehicles equipped with a wiper motion detection module for generating motion information of the wiper installed on the windshield of the vehicle;
• and
• a server configured to:
• store traffic flow statistical data generated based on vehicle driving information including location information and wiper motion information of the plurality of vehicles driving on a road;
• receive a vehicle driving information from a plurality of third vehicles respectively driving on a road, wherein the third vehicle is a vehicle that has most recently driven, prior to a second vehicle, on a road included in a travel route from a point of departure to a point of destination of the second vehicle, wherein the vehicle driving information includes vehicle location information and wiper motion information, the receiving of the vehicle driving information comprises:
• collecting wiper motion information obtained by detecting motions of wipers installed on the plurality of third vehicle;
• store the vehicle driving information including the wiper motion information and the vehicle location information received from a plurality of third vehicles;
• receive, from the second vehicle, a request for calculating an estimated time of arrival with respect to a travel route of the second vehicle, which is determined according to the point of departure information and the point of destination information of the second vehicle;
• and
• search for vehicle driving information received from the third vehicle that has previously driven a road included in the travel route of the second vehicle;
• calculate an estimated time of arrival with respect to the travel route based on the wiper motion information included in the found vehicle driving information and the traffic flow statistical data;
• generating a road traffic map using each piece of road information based on the vehicle location information, wiper motion information and the traffic flow statistical data, and
• wherein the management server is further configured to:
• select either special traffic flow statistical data or general traffic flow statistical data, based on the wiper motion information,
• when the special traffic flow statistical data is selected but does not exist in the storage unit, the management server selects the speed reduction rate based on the property of the road and motion speed level information of the wiper, and
• the management server searches for the general traffic flow statistical data of the road and estimates the driving speed by applying the selected speed reduction rate to the driving speed of the vehicle, included in the general traffic flow statistical data,
• wherein the speed reduction rate is a ratio of a driving speed included in the general traffic flow statistical data and a driving speed included in the special traffic flow statistical data, which is calculated for the each property of the road and each motion speed level information of the wiper included in the wiper motion information.