A speed control device can execute continuous deceleration control and speed setting change control. In the continuous deceleration control, a vehicle is decelerated over a period of time that a first operation is effective. In the speed setting change control, upon reception of a second operation, one set speed is selected out of a plurality of set speeds that are set in advance, and a target speed of the vehicle is changed to the selected set speed. When a deceleration completion speed, which is a speed at completion of the continuous deceleration control, is equal to or above a slowest set speed among the set speeds, the speed control device is configured to set as a new target speed the set speed that is equal to or below the deceleration completion speed and that is closest to the deceleration completion speed.

A travel control device whereby wasted energy consumption can be suppressed. The travel control device (100) has: a leading vehicle detection unit (110) that, once a leading vehicle that has been followed at no more than a set vehicle speed has gone, determines whether or not a new leading vehicle has been detected within a prescribed time; a speed determination unit (120) that, if a new leading vehicle has been detected, determines whether or not the speed difference between the speed of a host vehicle and the speed of the leading vehicle is within a set range having zero as the reference therefor; and a travel control unit (130) that, if the speed difference is within the set range, controls the host vehicle so as to prohibit acceleration for reducing the distance between the host vehicle and the new leading vehicle to a set inter-vehicle distance.

A vehicle control device disclosed in the present disclosure includes: a first control unit configured to control a speed of the vehicle in accordance with the route distance and the set speed until the detection unit determines that the vehicle has passed through the ETC toll gate, while the vehicle is performing the constant-speed traveling by the cruise control unit; a vehicle frontward detecting unit configured to detect road information about a road frontward of the vehicle; and a second control unit configured to change control content in the cruise control unit on the basis of a detection result from the vehicle frontward detecting unit, when the detection unit determines that the vehicle has passed through the ETC toll gate, while the vehicle is performing the constant-speed traveling by the cruise control unit.

Provided are a travel control device that enhance safety while enabling smooth overtaking of a vehicle from tracking travel. This travel control device is equipped with a direction indication determination unit, a travel control unit that performs control to switch travel of the vehicle between tracking travel whereby the vehicle is made to travel by tracking the preceding vehicle and propulsion travel whereby the vehicle is made to travel so as to match the speed of the vehicle to a target speed, and an inter-vehicle distance detection unit that detects the inter-vehicle distance in tracking travel between the vehicle and the preceding vehicle. In cases in which, during tracking travel, it is determined that direction indication of vehicle has been activated and the inter-vehicle distance exceeds a prescribed distance, the travel control unit switches travel of the vehicle from tracking travel to propulsion travel.

A driver assistance system for a vehicle including an autonomous cruise control to autonomously control at least vehicle speed, position data obtaining unit to obtain vehicle position data, ego-vehicle sensor data obtaining unit to obtain ego-vehicle sensor data related to objects in proximity to the vehicle, works data receiving unit to receive works data regarding current roadworks within a predetermined distance of the vehicle, and a processor to determine, based on the ego-vehicle sensor data, the works data, the position data, the vehicle's position and direction of travel relative to one or more roadworks, and when the processor determines the vehicle is approaching one or more roadworks and the vehicle distance to the roadwork is less than a threshold distance, or when the processor determines that the vehicle is already present within a roadwork and the autonomous cruise control is enabled, disable the autonomous cruise control.

A vehicle control system includes: a first switch that accepts an operation of an occupant of a vehicle; and a performance part that performs, when the first switch is operated, travel assist in a node in which an assist degree is the largest at that time point.

A travel control device whereby wasted energy consumption can be suppressed. The travel control device (100) has: a leading vehicle detection unit (110) that, once a leading vehicle that has been followed at no more than a set vehicle speed has gone, determines whether or not a new leading vehicle has been detected within a prescribed time; a speed determination unit (120) that, if a new leading vehicle has been detected, determines whether or not the speed difference between the speed of a host vehicle and the speed of the leading vehicle is within a set range having zero as the reference therefor; and a travel control unit (130) that, if the speed difference is within the set range, controls the host vehicle so as to prohibit acceleration for reducing the distance between the host vehicle and the new leading vehicle to a set inter-vehicle distance.

A vehicle control device disclosed in the present disclosure includes: a first control unit configured to control a speed of the vehicle in accordance with the route distance and the set speed until the detection unit determines that the vehicle has passed through the ETC toll gate, while the vehicle is performing the constant-speed traveling by the cruise control unit; a vehicle frontward detecting unit configured to detect road information about a road frontward of the vehicle; and a second control unit configured to change control content in the cruise control unit on the basis of a detection result from the vehicle frontward detecting unit, when the detection unit determines that the vehicle has passed through the ETC toll gate, while the vehicle is performing the constant-speed traveling by the cruise control unit.

Provided are a travel control device that enhance safety while enabling smooth overtaking of a vehicle from tracking travel. This travel control device is equipped with a direction indication determination unit, a travel control unit that performs control to switch travel of the vehicle between tracking travel whereby the vehicle is made to travel by tracking the preceding vehicle and propulsion travel whereby the vehicle is made to travel so as to match the speed of the vehicle to a target speed, and an inter-vehicle distance detection unit that detects the inter-vehicle distance in tracking travel between the vehicle and the preceding vehicle. In cases in which, during tracking travel, it is determined that direction indication of vehicle has been activated and the inter-vehicle distance exceeds a prescribed distance, the travel control unit switches travel of the vehicle from tracking travel to propulsion travel.

A driver assistance system for a vehicle including an autonomous cruise control to autonomously control at least vehicle speed, position data obtaining unit to obtain vehicle position data, ego-vehicle sensor data obtaining unit to obtain ego-vehicle sensor data related to objects in proximity to the vehicle, works data receiving unit to receive works data regarding current roadworks within a predetermined distance of the vehicle, and a processor to determine, based on the ego-vehicle sensor data, the works data, the position data, the vehicle's position and direction of travel relative to one or more roadworks, and when the processor determines the vehicle is approaching one or more roadworks and the vehicle distance to the roadwork is less than a threshold distance, or when the processor determines that the vehicle is already present within a roadwork and the autonomous cruise control is enabled, disable the autonomous cruise control.