A method for determining a braking distance of a vehicle, wherein a coefficient of friction (COF)actual between a brake lining and a brake disc is calculated as a function of a tensioning force Fd, a vehicle velocity V and a temperature of the frictional layer Tdisc, wherein the temperature of the frictional layer Tdisc is updated dynamically on the basis of the coefficient of friction COFactual in order to calculate a braking distance which approaches reality.

A vehicle travel control device includes computation circuitry, and a device controller that controls actuation of a traveling device mounted on a vehicle, based on a result from the computation circuitry. The computation circuitry identifies a vehicle outdoor environment based on an output from image circuitry that acquires image information of vehicle outdoor environment, sets a route on which the vehicle is to travel, in accordance with the vehicle outdoor environment previously identified, determines a target motion of the vehicle to follow the route previously set, calculates a target physical quantity to be executed by the traveling device to achieve the target motion previously determined, and calculates a controlled variable of the traveling device such that the target physical quantity calculated is achieved, and the device controller outputs a control signal to the traveling device so as to control the traveling device to control a motion of the vehicle.

This travel control device includes: a road determining unit which determines whether a road including a downward slope along which a vehicle is traveling includes a first curved road and a second curved road; and a travel control unit which, if the road determining unit has determined that the road contains the first curved road and the second curved road, causes the vehicle, when being caused to travel in such a way as to maintain a target speed, to decelerate at a curved road entry side of the first curved road and to coast from a curved road exit side of the first curved road, such that the vehicle can pass through the first curved road.

Methods and systems for operating a vehicle on a reduced traction surface are disclosed. A controller of the vehicle obtains at least one of: ambient information or GPS information, determines a derate increment size based on the ambient or GPS information, imposes a sustained derate by applying a torque limit on a braking torque of the vehicle based on the derate increment size in response to detecting a traction control event. The controller also determines a verification period and a derate reduction period based on the ambient or GPS information to reduce the sustained derate in response to detecting a lack of traction control event during the verification period at a rate determined by the derate reduction period.

A vehicle stop determination device includes: a vehicle wheel speed sensor that outputs a signal according to a rotational speed of vehicle wheels; an acquisition unit that acquires a wheel speed at a predetermined reference time that a vehicle decelerates, based on an output signal of the vehicle wheel speed sensor; a derivation unit that derives a stopping position where the vehicle stops, based on the wheel speed acquired by the acquisition unit; and a determination unit that executes a stop determination to determine that the vehicle has stopped, when a difference distance between a position of the vehicle after the reference time and the stopping position is a stop determination value or less.

A system for displaying contextually-sensitive braking information on a surface of a vehicle is presented. The system may include a transceiver, one or more memories, an electronic display disposed on the surface, and one or more processors. The one or more processors may be configured to detect a braking event of the vehicle, wherein the braking event has an associated braking force. The one or more processors may compare the braking force to a predetermined threshold braking force to determine whether the braking force exceeds the threshold braking force. The one or more processors may further cause the electronic display to display a braking indication having an intensity that is proportional to the braking force, wherein the braking indication may include a braking rationale corresponding to the braking event in response to determining that the braking force exceeds the threshold braking force.

A brake state estimation device includes: a position acquisition section that acquires a position of a subject vehicle; and a state estimation section that estimates a state of deterioration of brake fluid for operating a hydraulic brake device of the subject vehicle, on the basis of humidity information corresponding to the position of the subject vehicle, and duration information expressing a duration of staying in an area that includes the position of the subject vehicle.

The present disclosure relates generally to systems and methods for determining a weather condition for an upcoming area through which a vehicle system will travel. The systems and methods also may include determining intrinsic and extrinsic characteristics related to the vehicle, the route, or the upcoming area and using this information to determine or change a braking initiation time for the vehicle system.

Systems and methods are provided for variable actuation and release of a vehicle's brake hold mechanism/function. A brake hold device may be implemented as a “tuner” or controller that can connect to and override, e.g., the default functionality of an existing brake hold mechanism of a vehicle. Delays in exiting a brake hold state, repetitive actuation of an accelerator to exit a brake hold state, and other shortcomings associated with the conventional operation of brake hold mechanisms may be avoided by taking into account relevant vehicle operating conditions or environmental/road/traffic conditions.

The present disclosure relates to a brake system and a vehicle having the same.

The brake system includes a pedal force detector configured to output a pedal force signal corresponding to pressing of a brake pedal of a vehicle, a pressure detector configured to output a pressure signal corresponding to a pressure of a flow path connected to a wheel cylinder of the vehicle, a motor configured to provide a pressure of a pressurizing medium to the wheel cylinder, and a processor configured to acquire pressure information of the flow path based on the pressure signal of the pressure detector when receiving the pedal force signal of the pedal force detector, acquire a difference value between the pressure of the flow path and a target pressure corresponding to the pedal force signal based on the pressure information of the flow path and pre-stored target pressure information, acquire compensation pressure information based on the pressure information of the flow path and the pre-stored target pressure information when the acquired difference value is greater than or equal to a reference value, and control the motor based on the acquired compensation pressure information.