Vehicle control system, vehicle control method, and program

1. A vehicle control system, comprising:

an operator operated or grasped by an occupant of an own vehicle; and

a processor configured to execute instructions to:

recognize a surrounding situation of the own vehicle;

determine whether a condition for lane changing of the own vehicle from an own lane to an adjacent lane is satisfied based on the surrounding situation recognized by the recognizer; and

control steering and a deceleration or acceleration speed of the own vehicle and perform lane-changing control to change the own lane to the adjacent lane when the determiner determines that the condition is satisfied,

wherein the processor is configured to further execute instructions to:

not inhibit the lane-changing control when a speed of the own vehicle is equal to or less than a predetermined speed and a control mode of the own vehicle is a first mode, the first mode being a control mode in which the occupant is requested to operate or grasp the operator; and

inhibit the lane-changing control when the speed of the own vehicle is equal to or less than the predetermined speed and the control mode of the own vehicle is a second mode, the second mode being a control mode in which the occupant is not requested to operate or grasp the operator.

2. The vehicle control system according to claim 1 , wherein the processor is configured to further execute instructions to:

inhibit the lane-changing control by inhibiting determining whether the condition is satisfied when the speed of the own vehicle is equal to or less than the predetermined speed.

3. The vehicle control system according to claim 1 , wherein the processor is configured to further execute instructions to:

derive a standard speed serving as a standard of the adjacent lane based on the recognized surrounding situation; and

not inhibit the lane-changing control when a difference between the derived standard speed and the speed of the own vehicle is equal to or less than a threshold.

4. The vehicle control system according to claim 1 , further comprising:

a second operator operated or grasped by the occupant of the own vehicle and configured to adjust a movement direction of the own vehicle wherein the processor is configured to further execute instructions to:

detect that the occupant is operating the second operator,

not inhibit the lane-changing control when it is detected that the second operator is being operated or grasped; and

inhibit the lane-changing control when it is not detected that the operator is being operated or grasped.

5. The vehicle control system according to claim 1 , wherein the processor is configured to further execute instructions to:

inhibit the lane-changing control until transition of a control mode of the own vehicle from the second mode to the first mode when the control mode of the own vehicle is the second mode, it is determined that the condition is satisfied, and the speed of the own vehicle is equal to or less than the predetermined speed, and

not inhibit the lane-changing control when the control mode of the own vehicle transitions from the second mode to the first mode.

6. The vehicle control system according to claim 1 , wherein the processor is configured to further execute instructions to:

detect that the occupant is operating or grasping the operator; and

switch the control mode of the own vehicle between the first and second modes based on at least one of a recognition result for the surrounding situation and a detection result whether or not the operator is operated or grasped by the occupant.

7. The vehicle control system according to claim 1 , wherein the processor is configured to further execute instructions to:

determine whether the condition is satisfied under a situation in which another vehicle is located in front of the own vehicle in the own lane when it is recognized that the other vehicle is located in front of the own vehicle in the own lane; and

inhibit the lane-changing control when the condition is satisfied under the situation in which the other vehicle is located in front of the own vehicle in the own lane and the speed of the own vehicle is equal to or less than the predetermined speed.

8. The vehicle control system according to claim 1 , wherein the processor is configured to further execute instructions to:

not inhibit the lane-changing control when it is not recognized that other vehicle is located in behind of the own vehicle in the adjacent lane, it is determined that the condition is satisfied, and the speed of the own vehicle more than the predetermined speed;

not inhibit the lane-changing control when it is not recognized that other vehicle is located in behind of the own vehicle in the adjacent lane, it is determined that the condition is satisfied, the speed of the own vehicle is equal to or less than the predetermined speed, and the control mode of the own vehicle is the first mode; and

inhibit the lane-changing control when:

it is not recognized that other vehicle is located behind the own vehicle in the adjacent lane,

it is determined that the condition is satisfied,

the speed of the own vehicle is equal to or less than the predetermined speed, and

the control mode of the own vehicle is the second mode.

9. A vehicle control method causing an in-vehicle computer installed in an own vehicle including an operator operated or grasped by an occupant of the own vehicle to:

recognize a surrounding situation of the own vehicle;

determine whether a condition for lane changing of the own vehicle from an own lane to an adjacent lane is satisfied based on the recognized surrounding situation;

control steering and a deceleration or acceleration speed of the own vehicle and perform lane-changing control to change the own lane to the adjacent lane when the condition is determined to be satisfied;

not inhibit the lane-changing control when a speed of the own vehicle is equal to or less than a predetermined speed and a control mode of the own vehicle is a first mode, the first mode being a control mode in which the occupant is requested to operate or grasp the operator; and

inhibit the lane-changing control when:

the speed of the own vehicle is equal to or less than the predetermined speed, and

the control mode of the own vehicle is a second mode, wherein the second mode comprises a control mode in which the occupant is not requested to operate or grasp the operator.

10. A computer-readable non-transitory storage medium storing a program for causing an in-vehicle computer installed in an own vehicle including an operator operated or grasped by an occupant of the own vehicle to execute:

recognizing a surrounding situation of the own vehicle;

determining whether a condition for lane changing of the own vehicle from an own lane to an adjacent lane is satisfied based on the recognized surrounding situation;

controlling steering and a deceleration or acceleration speed of the own vehicle and perform lane-changing control to change the own lane to the adjacent lane when the condition is determined to be satisfied;

not inhibiting the lane-changing control when a speed of the own vehicle is equal to or less than a predetermined speed and a control mode of the own vehicle is a first mode, the first mode being a control mode in which the occupant is requested to operate or grasp the operator; and

inhibiting the lane-changing control when:

the speed of the own vehicle is equal to or less than the predetermined speed, and

the control mode of the own vehicle is a second mode, wherein the second mode comprises a control mode in which the occupant is not requested to operate or grasp the operator.