Autonomous driving system

1. An autonomous driving system mounted on a vehicle, comprising:

an information acquisition device configured to acquire driver operation information indicating an operation by a driver of the vehicle; and

an autonomous driving control device configured to perform autonomous driving control of the vehicle,

wherein the autonomous driving control device performs:

default lane setting processing that sets a default lane in which the vehicle travels; and

vehicle travel control processing that controls the vehicle to travel in the default lane when there is no departure reason for departing from the default lane and to travel away from the default lane until there is no departure reason when there is the departure reason,

wherein in the default lane setting processing, the autonomous driving control device refers to the driver operation information to set the default lane according to the driver's intention,

wherein a lane change instruction or a manual lane change operation by the driver is a lane change intended operation indicating a lane change intention of the driver, and

wherein in the default lane setting processing in a process of the autonomous driving control, the autonomous driving control device detects the lane change intended operation based on the driver operation information and sets the default lane according to the lane change intention.

2. The autonomous driving system according to claim 1 ,

wherein when the lane change intended operation is detected, the autonomous driving control device updates the default lane to a target lane intended by the lane change intended operation.

3. The autonomous driving system according to claim 1 ,

wherein a temporary lane change action is a series of actions that makes a lane change from a first lane to a second lane and then returns from the second lane to the first lane again,

wherein when the lane change intended operation is detected, the autonomous driving control device performs first determination processing that determines whether or not the lane change intended operation is related to the temporary lane change action,

wherein when the lane change intended operation is related to the temporary lane change action, the autonomous driving control device maintains the default lane and performs the vehicle travel control processing to complete the temporary lane change action, and

wherein when the lane change intended operation is not related to the temporary lane change action, the autonomous driving control device updates the default lane to a target lane intended by the lane change intended operation.

4. The autonomous driving system according to claim 1 ,

wherein the autonomous driving control device detects an autonomous driving activation instruction by the driver based on the driver operation information, and

wherein in response to the autonomous driving activation instruction, the autonomous driving control device activates the autonomous driving control and sets a current lane at a time when the autonomous driving activation instruction is detected, as the default lane.

5. The autonomous driving system according to claim 1 ,

wherein a temporary lane change action is a series of actions that makes a lane change from a first lane to a second lane and then returns from the second lane to the first lane again,

wherein the autonomous driving control device detects an autonomous driving activation instruction by the driver based on the driver operation information,

wherein in response to the autonomous driving activation instruction, the autonomous driving control device activates the autonomous driving control and performs second determination processing that determines whether or not the vehicle is in a process of the temporary lane change action,

wherein when the vehicle is in a process of the temporary lane change action, the autonomous driving control device sets the first lane as the default lane and performs the vehicle travel control processing to complete the temporary lane change action, and

wherein when the vehicle is not in a process of the temporary lane change action, the autonomous driving control device sets a current lane at a time when the autonomous driving activation instruction is detected, as the default lane.

6. The autonomous driving system according to claim 1 ,

wherein when there is a lane change reason, the autonomous driving control device makes a proposal of a lane change to the driver,

wherein the autonomous driving control device determines, based on the driver operation information, whether the driver approves or rejects the proposal, and

wherein when the driver rejects the proposal, the autonomous driving control device sets a current lane as the default lane.

7. The autonomous driving system according to claim 6 ,

wherein when the driver approves the proposal, the autonomous driving control device sets a target lane of the proposed lane change as the default lane.

8. The autonomous driving system according to claim 6 ,

wherein a temporary lane change action is a series of actions that makes a lane change from a first lane to a second lane and then returns from the second lane to the first lane again,

wherein when the driver approves the proposal, the autonomous driving control device performs third determination processing that determines whether or not the proposal is related to the temporary lane change action,

wherein when the proposal is related to the temporary lane change action, the autonomous driving control device maintains the default lane and performs the vehicle travel control processing to complete the temporary lane change action, and

wherein when the proposal is not related to the temporary lane change action, the autonomous driving control device sets a target lane of the proposed lane change as the default lane.

9. An autonomous driving system mounted on a vehicle, comprising:

an information acquisition device configured to acquire driver operation information indicating an operation by a driver of the vehicle; and

an autonomous driving control device configured to perform autonomous driving control of the vehicle,

wherein the autonomous driving control device performs:

default lane setting processing that sets a default lane in which the vehicle travels; and

vehicle travel control processing that controls the vehicle to travel in the default lane when there is no departure reason for departing from the default lane and to travel away from the default lane until there is no departure reason when there is the departure reason,

wherein in the default lane setting processing, the autonomous driving control device refers to the driver operation information to set the default lane according to the driver's intention

wherein the autonomous driving control device detects an autonomous driving activation instruction by the driver based on the driver operation information, and

wherein in response to the autonomous driving activation instruction, the autonomous driving control device activates the autonomous driving control and sets a current lane at a time when the autonomous driving activation instruction is detected, as the default lane.

10. An autonomous driving system mounted on a vehicle, comprising:

an information acquisition device configured to acquire driver operation information indicating an operation by a driver of the vehicle; and

an autonomous driving control device configured to perform autonomous driving control of the vehicle,

wherein the autonomous driving control device performs:

default lane setting processing that sets a default lane in which the vehicle travels; and

vehicle travel control processing that controls the vehicle to travel in the default lane when there is no departure reason for departing from the default lane and to travel away from the default lane until there is no departure reason when there is the departure reason,

wherein in the default lane setting processing, the autonomous driving control device refers to the driver operation information to set the default lane according to the driver's intention,

wherein when there is a lane change reason, the autonomous driving control device makes a proposal of a lane change to the driver,

wherein the autonomous driving control device determines, based on the driver operation information, whether the driver approves or rejects the proposal, and

wherein when the driver rejects the proposal, the autonomous driving control device sets a current lane as the default lane.

11. The autonomous driving system according to claim 10 ,

wherein when the driver approves the proposal, the autonomous driving control device sets a target lane of the proposed lane change as the default lane.

12. The autonomous driving system according to claim 10 ,

wherein a temporary lane change action is a series of actions that makes a lane change from a first lane to a second lane and then returns from the second lane to the first lane again,

wherein when the driver approves the proposal, the autonomous driving control device performs third determination processing that determines whether or not the proposal is related to the temporary lane change action,

wherein when the proposal is related to the temporary lane change action, the autonomous driving control device maintains the default lane and performs the vehicle travel control processing to complete the temporary lane change action, and

wherein when the proposal is not related to the temporary lane change action, the autonomous driving control device sets a target lane of the proposed lane change as the default lane.