A vehicle control device incudes a deceleration detection unit that detects a deceleration of a vehicle, a stop schedule specifying unit that specifies that the vehicle is scheduled to stop, a brake control unit that starts reducing a brake pressure when a vehicle speed of the vehicle becomes equal to or less than a threshold value, and a threshold value determination unit that determines the threshold value such that the threshold value increases as the deceleration detected by the deceleration detection unit increases after the stop schedule specifying unit specifies that the vehicle is scheduled to stop.

Disclosed are a device for controlling a hybrid vehicle and a method thereof. The device includes a communication device that receives a plurality of data sets including a driving pattern and a control coefficient, and a controller that extracts speeds from the driving pattern, learns a control coefficient prediction model by using an average and a standard deviation of the speeds, and determines a control coefficient of the hybrid vehicle based on the control coefficient prediction model for which the learning is completed.

A system for controlling a vehicle entering a roundabout includes a sensor unit configured to recognize a traffic island provided in the roundabout. The system also includes an autonomous driving controller configured to set defense zones based on the traffic island and a speed of the vehicle. The defense zones may indicate danger zones that one or both of i) cause collision between the vehicle and the traffic island or ii) deteriorate stability of the vehicle based on the traffic island and a speed of the vehicle. The system may additionally include a braking controller configured to perform braking of the vehicle entering the defense zones.

Systems and methods are provided for vehicle navigation. In one implementation, a system for a host vehicle includes at least one processor programmed to determine, based on an output of at least one sensor of the host vehicle, one or more target dynamics of a target vehicle; determine, based on one or more host dynamics of the host vehicle and the target dynamics, a time to collision; determine, based on the time to collision and the host dynamics, a host deceleration for the host vehicle to avoid the collision; determine, based on the time to collision and the target dynamics, a target deceleration for the target vehicle to avoid the collision; determine, based on the host deceleration and the target deceleration, a host deceleration threshold; and determine, based on a speed of the host vehicle and the host deceleration threshold, to brake the host vehicle.

Systems and methods for coordinating and controlling vehicles, for example heavy trucks, to follow closely behind each other, or linking to form a platoon. In one aspect, on-board controllers in each vehicle interact with vehicular sensors to monitor and control, for example, relative distance, relative acceleration or deceleration, and speed. In some aspects, vehicle onboard systems supply various data (breadcrumbs) to a Network Operations Center (NOC), which in turn provides data (authorization data) to the vehicles to facilitate platooning. The NOC suggests vehicles for platooning based on, for example, travel forecasts and analysis of relevant roadways to identify platoonable roadway segments. The NOC also can provide traffic, roadway, weather, or system updates, as well as various instructions. In some aspects, a mesh network ensures improved communication among vehicles and with the NOC. In some aspects, a vehicle onboard system may provide the authorization data.

A vehicle includes a computer including a processor and a memory storing instructions executable by the processor to identify a vehicle being in an autonomous drive mode. The computer includes instructions to detect a user request to change the drive mode from the autonomous drive mode to a manual drive mode. The computer includes instructions to move the brake pedal from the stowed position to the deployed position in response to the user request to change the drive mode. The computer includes instructions to prompt a user to validate the brake pedal being in the deployed position. The computer includes instructions to change from the autonomous drive mode to the manual drive mode in response to the user validating deployment of the brake pedal.

In some examples, a controller receives measurement data from a sensor on a vehicle, determines, based on the measurement data, a condition of usage of the vehicle, and selects a parameter set from among a plurality of parameter sets based on the determined condition of usage of the vehicle, the plurality of parameter sets corresponding to different conditions of usage of the vehicle, where each parameter set of the plurality of parameter sets includes one or more parameters that control adjustment of one or more respective adjustable elements of the vehicle. The controller causes application of the selected parameter set on the vehicle.

A method for controlling brake pressure during a shift of a vehicle out of park may include determining that a first status condition is met when the vehicle is in park with an electric parking brake applied, determining that a second status condition is met when the vehicle is not moving, responsive to detecting a shift of the vehicle out of park when the first and second status conditions are both met, directing a build-up of brake pressure until a brake pressure target is reached, and holding the brake pressure at the brake pressure target until a release condition is met.

A vehicle driving assist apparatus executes a constant speed moving control to autonomously control a moving speed of an own vehicle to a set moving speed. The vehicle driving assist apparatus pauses the constant speed moving control and executes an intermittent braking control when the own vehicle moves down a slope having a gradient smaller than a predetermined gradient threshold while the constant speed moving control is executed. The intermittent braking control is a control to alternately apply and stop applying the braking force to the own vehicle. The braking force applied to the own vehicle by the intermittent braking control is greater than the braking force applied to the own vehicle by the constant speed moving control.

A method approximates a friction value between wheels of a vehicle and a road surface. The method includes the following steps: carrying out at least one test acceleration of the vehicle by acting on at least one test wheel; ascertaining a wheel slip of the test wheel for at least one period of the test acceleration; ascertaining a test manipulated variable provided during the period in order to act on the test wheel; ascertaining a test load characteristic present on the test wheel during the period; and ascertaining a reference friction value for the test acceleration on the basis of the ascertained test load characteristic, the ascertained test manipulated variable and the ascertained wheel slip of the test wheel. A driver assistance system is configured to perform the method. A vehicle includes the driver assistance system.