Lane departure suppression device
A lane departure suppression device includes an object information acquisition device configured to acquire object information around a vehicle, and an electronic control device. The electronic control device is configured not to execute lane departure suppression control when determination is made that there is a possibility or a fact of lane departure of the vehicle and that a driver intends the lane departure. The electronic control device is configured to execute at least issuance of alert as the lane departure suppression control when the determination is made that there is the possibility or the fact of the lane departure of the vehicle and that the driver intends the lane departure but determination is made that a traveling lane of the vehicle is a lane-off prohibition lane or an overtaking prohibition lane based on the object information.
1. A lane departure suppression device comprising:
an object information acquisition device configured to acquire object information around a vehicle; and
an electronic control device, wherein:
the electronic control device is configured to determine whether there is a possibility or a fact of lane departure of the vehicle based on the object information acquired by the object information acquisition device;
the electronic control device is configured to execute at least one of issuance of alert and automatic steering as lane departure suppression control when determination is made that there is the possibility or the fact of the lane departure of the vehicle and that a driver does not intend the lane departure;
the electronic control device is configured not to execute the lane departure suppression control when determination is made that there is the possibility or the fact of the lane departure of the vehicle and that the driver intends the lane departure; and
the electronic control device is configured to execute at least the issuance of the alert as the lane departure suppression control when the determination is made that there is the possibility or the fact of the lane departure of the vehicle and that the driver intends the lane departure but determination is made that a traveling lane of the vehicle is a lane-off prohibition lane or an overtaking prohibition lane based on the object information.
2. The lane departure suppression device according to claim 1 , wherein:
the electronic control device is configured to execute the issuance of the alert and the automatic steering when determination is made that, in a situation in which the determination is made that there is the possibility or the fact of the lane departure of the vehicle and that the driver intends the lane departure, the traveling lane of the vehicle is the lane-off prohibition lane or the overtaking prohibition lane and a preceding vehicle is not present ahead of the vehicle based on the object information; and
the electronic control device is configured to execute the issuance of the alert and not to execute the automatic steering when determination is made that, in the situation in which the determination is made that there is the possibility or the fact of the lane departure of the vehicle and that the driver intends the lane departure, the traveling lane of the vehicle is the lane-off prohibition lane or the overtaking prohibition lane and the preceding vehicle is present ahead of the vehicle based on the object information.
3. The lane departure suppression device according to claim 1 , wherein the electronic control device is configured not to execute the lane departure suppression control when determination is made that, in the situation in which the determination is made that there is the possibility or the fact of the lane departure of the vehicle and that the driver intends the lane departure, the traveling lane of the vehicle is neither the lane-off prohibition lane nor the overtaking prohibition lane based on the object information.
4. The lane departure suppression device according to claim 1 , wherein the electronic control device is configured to determine that the driver intends the lane departure when determination is made that a turn signal lever is tilted in a lane departure direction or that a steering operation is performed in the lane departure direction.
5. The lane departure suppression device according to claim 1 , wherein the alert includes information indicating that the lane departure of the vehicle is not permitted because the traveling lane of the vehicle is the lane-off prohibition lane or the overtaking prohibition lane.