# US 12,602,991 B2 · 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

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- Number: US 12,602,991 B2
- Document ID: US12602991B2
- Status: Granted
- Kind: B2
- Application number: 18/245,219
- Filed: 2021-09-06
- Published: 2023-11-30
- Granted: 2026-04-14
- Earliest claimed: 2020-09-16
- Assignees: 42Dot Inc.
- Applicants: 42Dot Inc.
- Inventors: Seung Hyun Ji
- Web page: https://patentgrep.com/patent/US12602991B2

## CPC

- G06Q 10/04: Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" (market predictions or forecasting for commercial activities G06Q30/0202)
- G08G 1/0112: {from the vehicle, e.g. floating car data [FCD]}
- G08G 1/0125: {Traffic data processing}
- G08G 1/0129: {for creating historical data or processing based on historical data}
- G08G 1/0133: {for classifying traffic situation}
- G08G 1/0141: {for traffic information dissemination}
- G06Q 50/40: Business processes related to the transportation industry (shipping G06Q10/083)
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93})

## Abstract

The present disclosure provides a method of generating traffic flow statistical data by using wiper motion information of a vehicle, the method comprising: (a) receiving, by a management server, vehicle driving information including location information and wiper motion information of a vehicle driving on a road, from the vehicle; and (b) generating, by the management server, traffic flow statistical data of the road on which the vehicle is driving, based on the vehicle driving information.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The management server of claim 1, wherein the traffic flow statistical data comprises driving speed information of the vehicle, driving time information of the vehicle, and motion speed level information of the wiper included in the wiper motion information.