DRIVING ASSIST METHOD AND DRIVING ASSIST DEVICE FOR VEHICLE AND MEDIUM

A method to assist a driving of a vehicle comprising the steps of: executing a travel assist control for avoiding a risk factor in front of the vehicle based on driving environment information of the vehicle; counting a time during which a vehicle operation requiring an operator of the vehicle to stop the execution of the travel assist control is detected after the start of the execution of the travel assist control; and stopping the execution of the travel assist control when the time exceeds a specified time. The method further comprising the steps of: evaluating an associated risk caused by a continuation of the execution of the travel assist control based on the driving environment information during counting of the time during which the detection of the vehicle operation continues; and shortening the specified time based on a result of the evaluation of the associated risk.