Abstract: A lane deviation prevention control device for a vehicle includes first and second target amount of turn calculators and a target amount of turn switchover determiner. The first target amount of turn calculator calculates a first target amount of turn until an arrival at a first target point. The second target amount of turn calculator calculates a second target amount of turn from the first target point to a second target point. The target amount of turn switchover determiner obtains a yaw angle estimated value until the arrival at the first target point, estimates, on the basis of the yaw angle estimated value, arrival time until the arrival at the first target point, and compares the 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.

Abstract: A lane deviation prevention control device for a vehicle includes an exterior information detector and a lane deviation prevention control start determiner. The lane deviation prevention control start determiner determines to start a lane deviation prevention control even when an own vehicle has already deviated from an own lane on which the own vehicle is traveling, on the condition that the exterior information detector detects an approaching vehicle that is approaching the own vehicle, on an adjacent lane on deviation side on which deviation is taking place, and that a lateral position of the own vehicle is equal to or smaller than a control start threshold.

Abstract: A lane deviation prevention control device for a vehicle includes first and second target amount of turn calculators and a target amount of turn switchover determiner. The first target amount of turn calculator calculates a first target amount of turn until an arrival at a first target point. The second target amount of turn calculator calculates a second target amount of turn from the first target point to a second target point. The target amount of turn switchover determiner obtains a yaw angle estimated value until the arrival at the first target point, estimates, on the basis of the yaw angle estimated value, arrival time until the arrival at the first target point, and compares the 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.

Abstract: A lane deviation prevention control device for a vehicle includes an exterior information detector and a lane deviation prevention control start determiner. The lane deviation prevention control start determiner determines to start a lane deviation prevention control even when an own vehicle has already deviated from an own lane on which the own vehicle is traveling, on the condition that the exterior information detector detects an approaching vehicle that is approaching the own vehicle, on an adjacent lane on deviation side on which deviation is taking place, and that a lateral position of the own vehicle is equal to or smaller than a control start threshold.