Abstract: A driving control device includes a processor that controls driving of a subject vehicle using any one of a first driving mode and a second driving mode having a lower driving assistance level than that of the first driving mode. The processor is configured to: after the driving mode switches from the first driving mode to the second driving mode, determine whether or not a travel environment of the subject vehicle satisfies an automatic return-possible condition; and when the travel environment of the subject vehicle satisfies the automatic return-possible condition after the driving mode switches from the first driving mode to the second driving mode, output, to a user interface, first information indicating that the driving mode of the subject vehicle can be switched automatically from the second driving mode to the first driving mode.

Abstract: A processor of a driving control device compares a vehicle speed of a subject vehicle traveling in a first lane with a vehicle speed of an adjacent other vehicle traveling in a second lane to determine whether a relative speed of the adjacent other vehicle to the subject vehicle is equal to or less than a predetermined speed difference threshold, and relaxes a travel condition for permitting the subject vehicle to travel at a predetermined driving assistance level when the relative speed is equal to or less than the speed difference threshold.

Abstract: A processor of a driving control device compares a vehicle speed of a subject vehicle traveling in a first lane with a vehicle speed of an adjacent other vehicle traveling in a second lane to determine whether a relative speed of the adjacent other vehicle to the subject vehicle is equal to or less than a predetermined speed difference threshold, and relaxes a travel condition for permitting the subject vehicle to travel at a predetermined driving assistance level when the relative speed is equal to or less than the speed difference threshold.

Abstract: A processor operates to: refer to a switching condition in which a vehicle speed and input form information of an input command are preliminarily associated with each other, to determine whether or not the input form of the input command satisfies the switching condition associated with the vehicle speed; when a determination is made that the input form of the input command satisfies the switching condition corresponding to the vehicle speed, switch a control mode of the vehicle from autonomous driving control to manual driving control based on the input command; and execute driving of the vehicle by the manual driving control.

Abstract: A driving control device includes a processor that controls driving of a subject vehicle using any one of a first driving mode and a second driving mode having a lower driving assistance level than that of the first driving mode. The processor is configured to: after the driving mode switches from the first driving mode to the second driving mode, determine whether or not a travel environment of the subject vehicle satisfies an automatic return-possible condition; and when the travel environment of the subject vehicle satisfies the automatic return-possible condition after the driving mode switches from the first driving mode to the second driving mode, output, to a user interface, first information indicating that the driving mode of the subject vehicle can be switched automatically from the second driving mode to the first driving mode.

Abstract: A processor operates to: refer to a switching condition in which a vehicle speed and input form information of an input command are preliminarily associated with each other, to determine whether or not the input form of the input command satisfies the switching condition associated with the vehicle speed; when a determination is made that the input form of the input command satisfies the switching condition corresponding to the vehicle speed, switch a control mode of the vehicle from autonomous driving control to manual driving control based on the input command; and execute driving of the vehicle by the manual driving control.

Abstract: A travel control method for a vehicle for executing autonomous travel control includes, prior to executing the autonomous travel control, presenting a driver with travel control information as to whether or not to accept execution of the autonomous travel control and detecting, in response to a presentation of the travel control information, an acceptance input made by the driver indicating that the driver accepts the execution of the autonomous travel control. The travel control method also includes: setting an input form of a present acceptance input by the driver to an input form different from an input form of a previous acceptance input.

Abstract: A parking control method causes a control device of a vehicle to execute a first control instruction for moving the vehicle along a first route to a target parking space, on the basis of an operation command acquired from an operator located outside the vehicle. This method includes, when execution of the first control instruction is suspended or canceled, calculating a second route for the vehicle to leave with a predetermined distance or more from an object detected around the vehicle and causing the control device to execute a second control instruction for moving the vehicle along the second route.

Abstract: A redundant system is mounted on a vehicle configured to autonomously travel. The redundant system at least includes a first power supply system and a second power supply system different from the first power supply system. The redundant system includes: an operation control main control device that performs a process to cause the vehicle to autonomously travel; and an operation control sub control device used instead of the operation control main control device when abnormality regarding the operation control main control device is detected. The operation control main control device is connected to the first power supply system and is not connected to the second power supply system. The operation control sub control device is connected to the second power supply system and is not connected to the first power supply system.

Abstract: A travel control method includes, in an assist level indicating a level of intervention of autonomous travel control in a traveling motion of a vehicle, setting at least a first assist level and a second assist level, which is lower than the first assist level in the level of intervention of the autonomous travel control. Where the assist level does not decrease from the first assist level to the second assist level while a subject vehicle is autonomously following a preceding vehicle under the autonomous travel control, when the subject vehicle makes a lane change from a subject vehicle lane in which the subject vehicle travels to an adjacent lane of the subject vehicle lane, the method includes detecting the preceding vehicle travelling in the adjacent lane, and prohibiting autonomously controlling the lane change of the subject vehicle when no preceding vehicle travelling in the adjacent lane is detected.

Abstract: A driving control method is performed to execute a lane-change control for controlling a host vehicle to autonomously change lanes from a first lane to an adjacent second lane using a processor of a driving control device that controls vehicle speed and steering of the host vehicle traveling in the first lane in an autonomous driving mode. The processor determines that the lane-change control can be executed upon determining that the other vehicle has been detected in a detection zone of the second lane, based on a detection result of a sensor. The processor determines that the lane-change control cannot be executed upon determining that the other has not been detected within the detection zone of the second lane. The processor outputs information regarding whether the lane-change control can be executed.

Abstract: In a drive control method for using a drive control device to control the operation of a host vehicle using at least two autonomous driving modes that have different levels of driving assistance. The drive control method includes shifting the autonomous driving mode from a first mode to a second mode in which the driving assistance level of the second mode is higher than the driving assistance level of the first mode upon detecting a preceding vehicle in front of a host vehicle while traveling in the first mode. In this drive control method, a detectable distance to the preceding vehicle for shifting to the second mode is greater than a followable distance to the preceding vehicle when following travel is permitted in the first mode.

Abstract: A parking control method executes a control instruction for moving a vehicle along a parking route. The parking route is calculated based on an operation command acquired from an operator located outside the vehicle. The parking control method includes detecting a relative altitude between a first height position of the operator and a second height position of the vehicle and when determining that the relative altitude is not less than a first predetermined value, changing a first speed to a second speed lower than the first speed. The first speed is preliminarily set in the control instruction. The parking control method further includes moving the vehicle in accordance with the control instruction changed.

Abstract: A travel control method for executing autonomous lane change control of a vehicle includes, before performing two or more successive lane changes, presenting the driver with first lane change information as to whether or not to accept execution of autonomous control of the successive lane changes; when detecting a first acceptance input made by the driver indicating that the driver accepts the execution of the autonomous control, executing first autonomous lane change control; then presenting the driver with second lane change information as to whether or not to accept execution of the autonomous lane change control after the first lane change; and when detecting a second acceptance input made by the driver, executing the autonomous lane change control after the first lane change. An action load of the second acceptance input is set smaller than an action load of the first acceptance input.

Abstract: When executing the autonomous lane change control of lane change of the subject vehicle from the subject vehicle lane in which the subject vehicle travels to adjacent lane, the autonomous lane change control is executed so as to accelerate the lateral speed of the subject vehicle in the subject vehicle lane and thereafter decelerate the lateral speed in the subject vehicle lane. As a result, it takes longer for the driver of the following vehicle to confirm the lateral movement of the preceding subject vehicle during the lane change of the subject vehicle from the start of the lane change than a lane change in which the lateral speed is decelerated in the adjacent lane. Therefore, it becomes easier to recognize the lane change.

Abstract: A parking control method causes a control device of a vehicle to execute a first control instruction for moving the vehicle along a first route to a target parking space, on the basis of an operation command acquired from an operator located outside the vehicle. This method includes, when execution of the first control instruction is suspended or canceled, calculating a second route for the vehicle to leave with a predetermined distance or more from an object detected around the vehicle and causing the control device to execute a second control instruction for moving the vehicle along the second route.

Abstract: A parking control method includes: performing parking control of moving a vehicle to a target parking position on the basis of an operation command acquired from an operator located outside the vehicle; when the parking control to the target parking position is suspended and the vehicle leaves the target parking position, calculating a moving direction of the vehicle on the basis of a parking direction when the vehicle is parked at a next target parking position; and moving the vehicle in the moving direction.

Abstract: When a subject vehicle performs first autonomous lane change control from a subject vehicle lane to an adjacent lane and then consecutively perform autonomous lane change control to a next adjacent lane in the same direction of lane change, lateral speed to perform second and subsequent autonomous lane change control is set slower than lateral speed to perform the first autonomous lane change control. Thus, the second and subsequent autonomous lane change control to the adjacent lane in the same direction of lane change is performed more slowly than the previously performed autonomous lane change control. Time used for confirming surrounding situations is lengthened, and the surrounding situations can be properly confirmed prior to the lane change.

Abstract: A parking control method calculates a first control instruction and causing a control device of a vehicle to execute the first control instruction on the basis of an operation command acquired from an operator. The first control instruction is for moving the vehicle along a first route to a target parking space. The parking control method includes: when detecting an object after start of execution of the first control instruction, presenting the operator with selection information for selecting a first mode in which the execution of the first control instruction is continued or a second mode in which the control device of the vehicle is caused to execute an alternative control instruction for moving the vehicle along an alternative route different from the first route; and causing the control device to execute the first control instruction or the alternative control instruction in accordance with selection input information from the operator.

Abstract: An exit assist method is executed using an exit assist controller configured to control a subject vehicle to move from an exit start position to a target exit position along an exit route. The exit assist method includes determining whether or not an adjacent parked vehicle is present in an adjacent parking space to the exit start position, and when no adjacent parked vehicle is present, generating the exit route that includes the adjacent parking space.