Vehicle collision avoidance assist apparatus

1. A vehicle collision avoidance assist apparatus, comprising an electronic control unit configured to execute a collision avoidance steering maneuvering assist process of applying a steering force to an own vehicle to assist a collision avoidance steering maneuvering carried out by a driver of the own vehicle when there is a probability that the own vehicle collides with an object ahead of the own vehicle, and the driver carries out the collision avoidance steering maneuvering to steer the own vehicle to avoid a collision of the own vehicle with the object,

wherein the vehicle collision avoidance assist apparatus comprises a surrounding information detection apparatus which detects information on a situation around the own vehicle including a situation ahead of the own vehicle,

wherein the electronic control unit is configured to notify the driver of a necessity of carrying out the collision avoidance steering maneuvering in a first manner when the electronic control unit determines that there is the possibility that the own vehicle collides with the object ahead of the own vehicle, based on the information detected by the surrounding information detection apparatus, and

wherein the electronic control unit is configured to notify the driver of a necessity of turning the own vehicle to the opposite direction to move the own vehicle straight in a second manner different from the first manner when (i) the own vehicle needs to be turned to one direction and then to an opposite direction to the one direction to avoid the collision of the own vehicle with the object, and (ii) the own vehicle reaches a point where the own vehicle needs to be turned to the opposite direction to move straight.

2. The vehicle collision avoidance assist apparatus as set forth in claim 1 ,

wherein the vehicle collision avoidance assist apparatus comprises a display apparatus which displays an image,

wherein the electronic control unit is configured to set, as a target collision avoidance route, a moving route of the own vehicle for avoiding the collision of the own vehicle with the object when the electronic control unit starts executing the collision avoidance steering maneuvering assist process, and

wherein the first manner is a manner of causing the display apparatus to display a steering wheel image illustrating a steering wheel of the own vehicle and an arrow image illustrating an allow having a first length and a first shape, and

the second manner is a manner of causing the display apparatus to display the steering wheel image positioned at its neutral position and the arrow image having a second length shorter than the first length and a second shape changed from the first shape, based on the target collision avoidance route.

3. The vehicle collision avoidance assist apparatus as set forth in claim 1 , wherein the electronic control unit is configured to:

when the electronic control unit starts executing the collision avoidance steering maneuvering assist process, set, as a target collision avoidance route, a moving route of the own vehicle for avoiding the collision of the own vehicle with the object; and

when the own vehicle deviates from the target collision avoidance route by a predetermined distance, notify the driver of the necessity of carrying out the collision avoidance steering maneuvering to a direction to cause the own vehicle to approach the target collision avoidance route.

4. The vehicle collision avoidance assist apparatus as set forth in claim 1 ,

wherein the vehicle collision avoidance assist apparatus comprises a display apparatus which displays an image, and

wherein the electronic control unit is configured to notify the driver of the necessity of carrying out the collision avoidance steering maneuvering by causing the display apparatus to display the image which shows the necessity of carrying out the collision avoidance steering maneuvering.

5. The vehicle collision avoidance assist apparatus as set forth in claim 4 ,

wherein the vehicle collision avoidance assist apparatus comprises a steering wheel maneuvered by the driver to steer the own vehicle, and

wherein the electronic control unit is configured to notify the driver of the necessity of carrying out the collision avoidance steering maneuvering by causing the display apparatus to display the image illustrating the steering wheel with the image illustrating a direction in which the driver needs to maneuver the steering wheel to avoid the collision of the own vehicle with the object.