Vehicle control device and control method

1 . A vehicle control device for controlling a vehicle, the control device comprising circuitry configured to:

detect a speed limit of a road on which the vehicle travels based on peripheral information on the vehicle obtained by an external sensor that the vehicle has;

present a user of the vehicle, as a suggested speed, either a first speed based on the detected speed limit or a second speed set by the user; and

perform travel control of controlling a travel speed of the vehicle in response to the user's approval of the suggested speed, in which the suggested speed is set as a target speed, wherein

the circuitry is configured to present the user the first speed as the suggested speed when the speed limit of the road on which the vehicle travels is different from a speed limit of a road on which the vehicle travels when a previous travel control is suspended or ended, the previous travel control being suspended or terminated just before the travel control currently being performed.

2 . A vehicle control device for controlling a vehicle, the control device comprising circuitry configured to:

detect a speed limit of a road on which the vehicle travels based on peripheral information on the vehicle obtained by an external sensor that the vehicle has;

present a user of the vehicle, as a suggested speed, either a first speed based on the detected speed limit or a second speed set by the user; and

perform travel control of controlling a travel speed of the vehicle in response to the user's approval of the suggested speed, in which the suggested speed is set as a target speed, wherein

the second speed is a target speed of a previous travel control that is suspended or terminated just before the travel control currently being performed, and

the circuitry is configured to present the user the second speed as the suggested speed when the speed limit of the road on which the vehicle travels is the same as a speed limit of a road on which the vehicle travels when the previous travel control is suspended or ended just before the travel control currently being performed.

3 . A vehicle control device for controlling a vehicle, the control device comprising circuitry configured to:

detect a speed limit of a road on which the vehicle travels based on peripheral information on the vehicle obtained by an external sensor that the vehicle has;

present a user of the vehicle, as a suggested speed, either a first speed based on the detected speed limit or a second speed set by the user; and

perform travel control of controlling a travel speed of the vehicle in response to the user's approval of the suggested speed, in which the suggested speed is set as a target speed, wherein

the second speed is a target speed of a previous travel control that is suspended or terminated just before the travel control currently being performed, and

the circuitry is configured to present the user the second speed as the suggested speed when the second speed deviates by a predetermined value or more from a speed limit of a road on which the vehicle travels when the previous travel control is suspended or ended just before the travel control currently being performed.

4 . The vehicle control device according to claim 3 , wherein

the circuitry is configured to present the user the second speed as the suggested speed when the second speed is higher by the predetermined value or more than the speed limit of the road on which the previous travel control is suspended or ended just before the travel control currently being performed.

5 . The vehicle control device according to claim 4 , wherein

the predetermined value is greater than an offset speed set by the user.

6 . The vehicle control device according to claim 5 , wherein

the first speed is a sum of the speed limit of the road on which the vehicle travels and the offset speed, and

the circuitry is configured to present the user the second speed as the suggested speed when the second speed is higher by the predetermined value or more than the speed limit of the road on which the previous travel control is suspended or ended and is higher than the first speed, and

the circuitry is configured to present the user the first speed as the suggested speed when the second speed is higher by the predetermined value or more than the speed limit of the road on which the vehicle travels when the previous travel control is suspended or ended just before the travel control currently being performed and is lower than the first speed.

7 . A vehicle control device for controlling a vehicle, the control device comprising circuitry configured to:

detect a speed limit of a road on which the vehicle travels based on peripheral information on the vehicle obtained by an external sensor that the vehicle has;

present a user of the vehicle, as a suggested speed, either a first speed based on the detected speed limit or a second speed set by the user; and

perform travel control of controlling a travel speed of the vehicle in response to the user's approval of the suggested speed, in which the suggested speed is set as a target speed, wherein

the circuitry is configured to change a presentation time of the suggested speed depending on a difference between the suggested speed and a travel speed of the vehicle when the suggested speed is presented to the user.

8 . The vehicle control device according to claim 7 , wherein

the circuitry is configured to shorten the presentation time if the difference between the suggested speed and the travel speed of the vehicle when the suggested speed is presented to the user is large, compared to a case where the difference is small.

9 . The vehicle control device according to claim 7 , wherein

the circuitry is configured to shorten the presentation time if the travel speed of the vehicle when the suggested speed is presented to the user is higher than the suggested speed, compared to a case where the travel speed of the vehicle is lower than the suggested speed.

10 . A vehicle control device for controlling a vehicle, the control device comprising circuitry configured to:

detect a speed limit of a road on which the vehicle travels based on peripheral information on the vehicle obtained by an external sensor that the vehicle has;

present a user of the vehicle, as a suggested speed, either a first speed based on the detected speed limit or a second speed set by the user; and

perform travel control of controlling a travel speed of the vehicle in response to the user's approval of the suggested speed, in which the suggested speed is set as a target speed, wherein

if a preceding vehicle traveling in front of the vehicle is present and a speed of the preceding vehicle is higher than the first speed and the second speed, the circuitry is configured to present the user a third speed based on the speed of the preceding vehicle as a suggested speed.