In one embodiment, a system perceives an environment surrounding an ADV including a vehicle in front of the ADV. The system determines whether the vehicle in front is slipping backwards based on the perception. The system determines whether the vehicle in front is situated on a road with a slope based on map information. The system determines whether a tail light or a brake light of the vehicle in front is turned on based on the perception. If it is determined that the vehicle in front is situated on a sloped road, is slipping backwards, and the tail light or the brake light is not turned on, the system calculates a time to impact or a distance to impact based on the distance and speed of the vehicle in front.

A parking brake fail safety control system and method for a vehicle having an electric-axle, may enable safe parking braking on a level ground, a slope, etc. By controlling the torque from a first motor configured for a rear wheel-first electric-axle and the torque from a second motor configured for a rear wheel-second electric-axle to have the same magnitude in opposite directions and by increasing/decreasing the torque from the first motor and the torque from the second motor, depending on a change of wheel speed when a parking brake fails.

A method of vehicle operation includes, using one or more processors, receiving one or more inputs from one of one or more sensors of a first vehicle and one or more external sources communicatively coupled with the one or more processors. The one or more processors determine a plurality of optional routes existing between a first location of the first vehicle and a future destination of the first vehicle. Using the one or more inputs, the one or more processors predict a vehicle route by predicting which of the optional routes the first vehicle will take to get from the first location to the future destination.

A method for operating a vehicle brake system, wherein the brake system has at least one friction brake and at least one regenerative brake. A defined switching pattern is specified for switching between a self-cleaning operating mode for cleaning the friction brake and a normal operating mode of the brake system. The method includes determining information describing the state of the at least one friction brake, determining the state of the at least one friction brake from the information, determining whether the state satisfies a specific switching criterion, and, if the self-cleaning operating mode is to be activated according to the switching pattern and the state of the friction brake does not satisfy the switching criterion, suppressing activation of the self-cleaning operating mode and maintaining the normal operating mode.

An apparatus comprising an interface, a memory and a processor. The interface may be configured to receive sensor data samples during operation of a vehicle. The memory may be configured to store the sensor data samples over a number of points in time. The processor may be configured to analyze the sensor data samples stored in the memory to detect a pattern. The processor may be configured to manage an application of brakes of the vehicle in response to the pattern.

A vehicle includes an electric machine and a controller. The controller is programmed to, in response to releasing an accelerator pedal during a first driving scenario that is based on a first set of navigation data, increase regenerative braking torque of the electric machine to a first value. The controller is further programmed to, in response to releasing the accelerator pedal during a second driving scenario that is based on a second set of navigation data, increase the regenerative braking torque of the electric machine to a second value that is less than the first value.

A vehicle control device includes an automatic driving control device configured to execute automatic driving control on a vehicle, and an anti-lock braking system configured to control a longitudinal slip ratio of wheels of the vehicle to be equal to or smaller than a threshold during braking of the vehicle. The automatic driving control to be executed by the automatic driving control device includes braking force control for changing a braking force to be applied to the wheels of the vehicle depending on a target deceleration set without being based on a deceleration request by a driver. The automatic driving control device is configured to, when a failure of the anti-lock braking system is detected during execution of the automatic driving control on the vehicle, set the target deceleration in the braking force control to a value equal to or smaller than an upper limit deceleration value.

A braking control device includes a stop holding controller and an uneven-ground traveling determination unit. After the vehicle makes a stop and a brake operation performed by a driver who drives the vehicle is canceled, the stop holding controller is configured to perform execution of a stop holding control that includes holding braking force of the vehicle and canceling the braking force in response to a predetermined start operation performed by the driver. The uneven-ground traveling determination unit is configured to determine whether the vehicle is traveling on an uneven ground. The stop holding controller is configured to disable the execution of the stop holding control in a case where the uneven-ground traveling determination unit determines that the vehicle is traveling on the uneven ground.

The invention relates to a slope brake pressure determining method and system. The method includes: a pre-braking slope estimated value is determined according to a specified cycle, where a current pre-braking slope estimated value is determined and is used as a first slope estimated value a.sub.estimate1, and a pre-braking slope estimated value of a previous cycle that is latched prior to the establishment of brake pressure is used as a second slope estimated value a.sub.estimate2; an instantaneous vehicle speed v.sub.brake prior to the establishment of the brake pressure is latched, a vehicle traveling distance l.sub.brake and time t.sub.brake are accumulated, and an in-braking slope estimated value a.sub.slop is determined based on the instantaneous vehicle speed v.sub.brake, the vehicle traveling distance l.sub.brake, and the time t.sub.brake; and pre-braking pressure p1 and in-braking pressure p2 are determined based on the second slope estimated value a.sub.estimate2 and a third slope estimated value a.sub.estimate3, respectively, initial brake pressure p3 is determined based on the pre-braking pressure p1 and the in-braking pressure p2, and final brake pressure p4 is determined based on the initial brake pressure p3. According to the invention, the brake pressure can be accurately determined.

The present invention provides a vehicle control device that can reduce the delay in the deceleration response of a vehicle to a deceleration command. The present invention modifies the distribution ratio of brake fluid pressure between front brakes and rear brakes on the basis of lateral motion information, vehicle information, and a collision risk or a traveling scene obtained from information pertaining to the external surroundings. The brake fluid pressure is distributed to only one of the front brakes or the rear brakes.