A travel control device for a vehicle, includes: a lane information acquisition unit configured to acquire lane information; a steering control unit configured to control steering of the vehicle by executing lane travel control to make the vehicle travel along the lane; and a vehicle speed control unit configured to control a vehicle speed by executing constant speed travel control in which the vehicle is made to travel at a set vehicle speed and/or adaptive cruise control in which the vehicle is made to travel at a speed equal to or lower than the set vehicle speed so as to follow a preceding vehicle. The vehicle speed control unit is configured to control the vehicle speed during a turn of the vehicle by setting a vehicle speed upper limit value, which is set to different values depending on whether the lane travel control is being executed.

One object of the present disclosure is to provide a technique capable of appropriately suppressing an excessive operation by a remote operator. The present disclosure relates to a remote driving system for controlling a vehicle that is a target of remote driving by the remote operator. The remote driving system executes the following two processes. The first process is a process of determining whether or not an evaluation value, which indicates a degree of likelihood of an excessive operation by the remote operator and is calculated from a shape or a state of a road, is larger than a threshold value. The second process is a process of controlling the vehicle so that a vehicle speed of the vehicle becomes lower than a vehicle speed limit determined based on the evaluation value when the evaluation value is larger than the threshold value.

Controlling the speed of a motor vehicle with an adaptive cruise control system in a curve can include dynamically adjusting the speed of the motor vehicle depending on the planned exit from the roundabout and the current position of the motor vehicle.

Systems and methods use cameras to provide autonomous navigation features. In one implementation, a method for navigating a user vehicle may include acquiring, using at least one image capture device, a plurality of images of an area in a vicinity of the user vehicle; determining from the plurality of images a first lane constraint on a first side of the user vehicle and a second lane constraint on a second side of the user vehicle opposite to the first side of the user vehicle; enabling the user vehicle to pass a target vehicle if the target vehicle is determined to be in a lane different from the lane in which the user vehicle is traveling; and causing the user vehicle to abort the pass before completion of the pass, if the target vehicle is determined to be entering the lane in which the user vehicle is traveling.

Systems and methods use cameras to provide autonomous navigation features. In one implementation, a method for navigating a user vehicle may include acquiring, using at least one image capture device, a plurality of images of an area in a vicinity of the user vehicle; determining from the plurality of images a first lane constraint on a first side of the user vehicle and a second lane constraint on a second side of the user vehicle opposite to the first side of the user vehicle; enabling the user vehicle to pass a target vehicle if the target vehicle is determined to be in a lane different from the lane in which the user vehicle is traveling; and causing the user vehicle to abort the pass before completion of the pass, if the target vehicle is determined to be entering the lane in which the user vehicle is traveling.

Systems and methods use cameras to provide autonomous navigation features. In one implementation, a method for navigating a user vehicle may include acquiring, using at least one image capture device, a plurality of images of an area in a vicinity of the user vehicle; determining from the plurality of images a first lane constraint on a first side of the user vehicle and a second lane constraint on a second side of the user vehicle opposite to the first side of the user vehicle; enabling the user vehicle to pass a target vehicle if the target vehicle is determined to be in a lane different from the lane in which the user vehicle is traveling; and causing the user vehicle to abort the pass before completion of the pass, if the target vehicle is determined to be entering the lane in which the user vehicle is traveling.

Methods and systems are provided for cruise control velocity tracking. In one example, the method or system may generate a torque command output via a velocity controller that allows for an error within bounds to reduce a fuel consumption amount, the torque command output selected from outcomes of a leader and follower game.

A method and system for operating a vehicle having a trip information determination device that continuously determines a current position of the vehicle as current trip information, a transceiver that transmits the current trip information and vehicle information to an evaluation station, a driving strategy determination device that captures whether a bend is in front of the vehicle in the direction of travel, and, if a bend is captured the driving strategy determination device, an optimum driving strategy, in terms of energy consumption for driving through the bend. The determined driving strategy is transmitted from the evaluation station to the and therefore to the vehicle.

Method for controlling a vehicle, comprising: identifying an upcoming curve and determining its properties; determining current vehicle speed, v.sub.v, estimating friction, μ.sub.e, between a tire of the vehicle and the road; estimating maximum allowable vehicle speed, v.sub.max_e, when entering the curve based on the properties, speed and friction; if the current vehicle speed is higher than the estimated maximum allowable vehicle speed, determining that a friction measurement is required; if distance, d.sub.v, between the vehicle and a curve entrance is higher than a predetermined threshold distance, d.sub.T, and if a braking action is detected, performing a friction measurement during the braking action to determine current friction, μ.sub.c; if a distance between the vehicle and the curve entrance is lower than the predetermined threshold distance, performing a friction measurement to determine a current friction; and determining a maximum allowable vehicle speed v.sub.max_d based on the curve radius, speed and friction.

A speed control device which is satisfactory in response and tracking to a speed setting, and can adjust an acceleration-and-deceleration feel according to preferences, is provided. The speed control device 6 controls a speed of a ship so that the speed automatically follows a speed setting set by a ship operator. The speed control device 6 includes a target speed setting module 63 and a change rate adjusting module 64. The target speed setting module 63 sets a target speed that is a target of the speed of the ship to follow, for every unit time, according to the speed setting, to change the target speed based on a given rate of change. The change rate adjusting module 64 decreases the rate of change by adjusting the rate of change at multiple stages, when the target speed set by the target speed setting module 63 approaches the speed setting.