METHOD AND SYSTEM FOR CONTROLLING VEHICLE IN CASE OF REDUCTION IN RELIABILITY OF LANE INFORMATION

A method and a system for controlling a vehicle in case of reduction in reliability of lane information are provided, and the method for controlling a vehicle in case of reduction in reliability of lane information according to an embodiment of the present disclosure comprises: detecting at least one lane line located ahead in a driving lane of an ego vehicle using a sensor of the ego vehicle; determining a lane-based path represented by an ndegree polynomial based on the detected lane line; calculating an amount of change in each coefficient of the ndegree polynomial; calculating a path reliability of the lane-based path using the amount of change in each coefficient; determining a required steering angle rate of the ego vehicle based on the path reliability; and controlling the ego vehicle according to the required steering angle rate.