Lane deviation prevention control device for vehicle

A lane deviation prevention control device for vehicle, the lane deviation prevention control device comprising:

• a first target amount of turn calculator configured to calculate, on a basis of time it takes for an own vehicle to deviate from a lane on which the own vehicle is traveling, and on a basis of a yaw angle of the own vehicle, a first target amount of turn from a start of a lane deviation prevention control to an arrival at a first target point, the lane deviation prevention control including preventing the own vehicle from deviating from the lane;
• a second target amount of turn calculator configured to calculate, on a basis of time it takes to travel from the first target point to a second target point, and on the basis of the yaw angle of the own vehicle, a second target amount of turn that decides a posture of the own vehicle from the first target point to the second target point, the second target point serving as an end point of the lane deviation prevention control;
• and
• a target amount of turn switchover determiner configured to obtains, on the basis of the yaw angle of the own vehicle, a yaw angle estimated value of the own vehicle until the arrival at the first target point, estimates, on a basis of a curvature of the lane and on the basis of the yaw angle estimated value of the own vehicle, arrival time from the start of the lane deviation prevention control to the arrival at the first target point, and compares the estimated arrival time with a threshold, to determine timing of a switchover from the first target amount of turn to the second target amount of turn.