Driving assistance method and system

A driving assistance method implemented by a driving assistance system includes: (A) calculating a head-swinging angle according to first activity sensing data and second activity sensing data, where the head-swinging angle represents an angle difference between a traveling direction of a vehicle and a direction in which a driver faces; (B) whether a sight line deviation condition is met or not is judged according to the head swinging angle, and the sight line deviation condition includes that the head swinging angle is larger than or equal to an angle threshold value; (C) if the sight line deviation condition is met, executing a collision early warning program which comprises outputting a warning notice when it is judged that the distance between the vehicle and the object in front of the vehicle is smaller than a warning distance threshold value. 一种由驾驶辅助系统实施的驾驶辅助方法包含：(A)根据一第一活动感测数据及一第二活动感测数据计算一摆头角度，其中，该摆头角度表示一车辆的行进方向与一驾驶之头部所朝之方向之间的角度差；(B)根据该摆头角度判断一视线偏移条件是否符合，其中，该视线偏移条件包含该摆头角度大于等于一角度阈值；(C)若该视线偏移条件符合，执行一碰撞预警程