A method for operating a brake installation of a vehicle. A first electrically controllable pressure provision device provides brake pressure for actuating hydraulically actuatable brakes. A first electronic open-loop and closed-loop control unit, and a first pressure detection device, measures brake pressure provided by a primary brake system. A secondary brake system between the primary system and a part of the wheel brakes has a second electrically controllable pressure provision device provides brake pressure for actuating at least the part of the brakes. A second electronic open-loop and closed-loop control unit, and at least one second pressure detection device, the signals of which are processed in the second electronic open-loop and closed-loop control unit. The secondary system monitors the primary system based on signals from the second pressure detection device and on a predefined brake pressure demand to build up a brake pressure corresponding to the predefined brake pressure demand.

Systems and methods for determining a probability of an occurrence of a seismic event are provided. According to certain aspects, a system may receive one or more changes in acceleration associated with a plurality of vehicles. The system may receive one or more captured images of a vehicle occupant associated with a given vehicle of the plurality of vehicles. The system may determine a probability of an occurrence of a seismic event according to the one or more changes in acceleration exceeding a threshold and a likelihood that the one or more captured images are associated with an occurrence of a seismic event. Based on the probability exceeding a threshold, the system may provide an output signal that includes at least the determined probability and location information associated with the plurality of vehicles.

Systems and methods for determining a probability of an occurrence of a seismic event are provided. According to certain aspects, a system may receive one or more changes in acceleration associated with a plurality of vehicles. The system may receive one or more captured images of a vehicle occupant associated with a given vehicle of the plurality of vehicles. The system may determine a probability of an occurrence of a seismic event according to the one or more changes in acceleration exceeding a threshold and a likelihood that the one or more captured images are associated with an occurrence of a seismic event. Based on the probability exceeding a threshold, the system may provide an output signal that includes at least the determined probability and location information associated with the plurality of vehicles.

Vehicle parking brake warning systems are disclosed herein. In one implementation, a vehicle parking brake warning system may include a relay coupled to an operator warning system. The relay including a relay switch and a coil, the relay switch conductively couple the operator warning system to ground when closed, and the coil to cause the relay switch to open when an electrical current is flowing through the coil, the coil coupled to a first coil node and a second coil node. A brake status switch that couples the first coil node to a voltage source when closed. A driver status switch that couples the second coil node to ground when closed. And a capacitor coupled to the first coil node and the second coil node.

A brake pedal apparatus for a vehicle is provided. The brake pedal apparatus includes a fixing bracket fixedly installed in a vehicle, a pedal arm coupled to the fixing bracket to be rotatable about a first axis, and a collision rack coupled to the fixing bracket to be rotatable about a second axis which is different from the first axis. The collision rack is configured to rotate upon a collision with a collision bracket. The fixing bracket supports the pedal arm to allow the pedal arm to be movable in a predetermined direction. The collision rack blocks the movement of the first axis of the pedal arm, and upon the collision with the collision bracket, the collision rack allows the pedal arm to be disengaged from the fixing bracket, thereby reducing the risk of injuring the driver.

A brake pedal apparatus for a vehicle is provided. The brake pedal apparatus includes a fixing bracket fixedly installed in a vehicle, a pedal arm coupled to the fixing bracket to be rotatable about a first axis, and a collision rack coupled to the fixing bracket to be rotatable about a second axis which is different from the first axis. The collision rack is configured to rotate upon a collision with a collision bracket. The fixing bracket supports the pedal arm to allow the pedal arm to be movable in a predetermined direction. The collision rack blocks the movement of the first axis of the pedal arm, and upon the collision with the collision bracket, the collision rack allows the pedal arm to be disengaged from the fixing bracket, thereby reducing the risk of injuring the driver.

The invention concerns a method for utilizing a park brake system to improve the deceleration of a vehicle in the event of failure of the service brake system, the service brake system comprising a brake pedal (2) and at least one air supply circuit (40, 42, 44), the method including the steps of a) measuring the pressure in the air supply circuit, in particular in an air tank (40, 42) of the air supply circuit, and b) when the pressure in the air supply circuit falls below a certain value, switching the park brake system from a normal mode, wherein the park brake system is released, to an assistance mode. In the assistance mode, the park brake system assists the service brake system only if the brake pedal (2) is depressed until reaching a threshold position different from a rest position.

The invention concerns a method for utilizing a park brake system to improve the deceleration of a vehicle in the event of failure of the service brake system, the service brake system comprising a brake pedal (2) and at least one air supply circuit (40, 42, 44), the method including the steps of a) measuring the pressure in the air supply circuit, in particular in an air tank (40, 42) of the air supply circuit, and b) when the pressure in the air supply circuit falls below a certain value, switching the park brake system from a normal mode, wherein the park brake system is released, to an assistance mode. In the assistance mode, the park brake system assists the service brake system only if the brake pedal (2) is depressed until reaching a threshold position different from a rest position.

A brake control device has: a first control unit which controls a first pressurizing mechanism capable of pressurizing a brake fluid using one pressurizing mode among a plurality of set pressurizing modes; and a second control unit which controls a second pressurizing mechanism separate from the first pressurizing mechanism and capable of pressurizing the brake fluid pressurized by the first pressurizing mechanism, wherein the first and second control units perform cooperative control based on the control information. The brake control device includes a mode estimation unit for estimating the current pressurizing mode set in the first pressurizing mechanism when the transfer of the control information is blocked. The second control unit is provided with a specific control unit which, in a state in which the transfer of the control information is blocked, controls the second pressurizing mechanism according to the pressurizing mode estimated by the mode estimation unit.

A brake system for a transportation vehicle and a transportation vehicle having such a brake system. The brake system includes two brake circuits which each have a control unit and a battery, wherein the respective control unit actuates two of a total of four service brakes and at least one of at least two electric parking brakes. The brake system also has an electronic circuit element. The brake system forms a defect signal in response to a double fault affecting the two brake circuits and when a defect in at least one of the control units is detected, and/or in which a respective supply voltage of at least one of the control units drops below a predefined limiting value. The at least one electronic circuit element actuates the electric parking brakes when a defect signal is formed.