A railway car brake lock has a brake linkage arm connector configured to connect to a brake linkage arm. A draw rod is connected to the brake linkage arm connector. The draw rod has a locking rack with a plurality of locking rack teeth. An outside shell holds the locking rack, while allowing the locking rack to slide between a locking rack engaged position and a locking rack disengaged position. The locking rack engaged position corresponds to a railway car brake engaged position and wherein the locking rack disengaged position corresponds to a railway car brake disengaged position. A locking actuator piston has locking actuator piston teeth that engage the locking rack teeth when the locking actuator piston slides from a locking actuator piston disengaged position to a locking actuator piston engaged position.

A railway car brake lock has a brake linkage arm connector configured to connect to a brake linkage arm. A draw rod is connected to the brake linkage arm connector. The draw rod has a locking rack with a plurality of locking rack teeth. An outside shell holds the locking rack, while allowing the locking rack to slide between a locking rack engaged position and a locking rack disengaged position. The locking rack engaged position corresponds to a railway car brake engaged position and wherein the locking rack disengaged position corresponds to a railway car brake disengaged position. A locking actuator piston has locking actuator piston teeth that engage the locking rack teeth when the locking actuator piston slides from a locking actuator piston disengaged position to a locking actuator piston engaged position.

Provided is an electric brake system capable of compensating for a braking force by the whole electric brake system when functional degradation occurs in a part of the system. This system includes: a diagnosis module (24) that detects functional degradation in each of electric brake devices (DB); a control calculation module (23) that estimates a controlled variable error that is a difference between an estimate of a braking force determined by a braking force estimation device (28) of an electric brake device (DB) in which functional degradation is detected, and a braking force determined by the device (28) of an electric brake device (DB) in which no functional degradation is detected; and a controlled variable compensating module (29) that, when the module (23) estimates the existence of the error, distributes a braking force corresponding to the error among the devices (DB) other than the electric brake device in which the error exists so as to add the distributed braking force to the braking force target value of each electric brake device.

Provided is an electric brake system capable of compensating for a braking force by the whole electric brake system when functional degradation occurs in a part of the system. This system includes: a diagnosis module (24) that detects functional degradation in each of electric brake devices (DB); a control calculation module (23) that estimates a controlled variable error that is a difference between an estimate of a braking force determined by a braking force estimation device (28) of an electric brake device (DB) in which functional degradation is detected, and a braking force determined by the device (28) of an electric brake device (DB) in which no functional degradation is detected; and a controlled variable compensating module (29) that, when the module (23) estimates the existence of the error, distributes a braking force corresponding to the error among the devices (DB) other than the electric brake device in which the error exists so as to add the distributed braking force to the braking force target value of each electric brake device.

A method and apparatus are provided for optimizing one or more object detection parameters used by an autonomous vehicle to detect objects in images. The autonomous vehicle may capture the images using one or more sensors. The autonomous vehicle may then determine object labels and their corresponding object label parameters for the detected objects. The captured images and the object label parameters may be communicated to an object identification server. The object identification server may request that one or more reviewers identify objects in the captured images. The object identification server may then compare the identification of objects by reviewers with the identification of objects by the autonomous vehicle. Depending on the results of the comparison, the object identification server may recommend or perform the optimization of one or more of the object detection parameters.

A method and apparatus are provided for optimizing one or more object detection parameters used by an autonomous vehicle to detect objects in images. The autonomous vehicle may capture the images using one or more sensors. The autonomous vehicle may then determine object labels and their corresponding object label parameters for the detected objects. The captured images and the object label parameters may be communicated to an object identification server. The object identification server may request that one or more reviewers identify objects in the captured images. The object identification server may then compare the identification of objects by reviewers with the identification of objects by the autonomous vehicle. Depending on the results of the comparison, the object identification server may recommend or perform the optimization of one or more of the object detection parameters.

An airbrake locking assembly for keeping parking brake engaged on a vehicle with airbrakes includes a vehicle that has airbrakes which include a parking brake plunger. The parking brake plunger is positionable in an actuated position and an un-actuated position. A collar is provided that has a first half being pivotally coupled to a second half. The collar is positionable around the parking brake plunger when the parking brake plunger is positioned in the actuated position. Moreover, the collar inhibits the parking brake plunger from being urged into the un-actuated position when the collar is positioned around the parking brake plunger. In this way the vehicle is retained in a parked position thereby enhancing safety for individuals entering and exiting the vehicle. A lock is coupled to first half of the collar and releasably engages the second half.

An airbrake locking assembly for keeping parking brake engaged on a vehicle with airbrakes includes a vehicle that has airbrakes which include a parking brake plunger. The parking brake plunger is positionable in an actuated position and an un-actuated position. A collar is provided that has a first half being pivotally coupled to a second half. The collar is positionable around the parking brake plunger when the parking brake plunger is positioned in the actuated position. Moreover, the collar inhibits the parking brake plunger from being urged into the un-actuated position when the collar is positioned around the parking brake plunger. In this way the vehicle is retained in a parked position thereby enhancing safety for individuals entering and exiting the vehicle. A lock is coupled to first half of the collar and releasably engages the second half.

Method for holding a vehicle in the stationary state, which has the following steps: (a) if the vehicle has an automatic transmission, engaging a parking lock, or if the vehicle has a manual transmission, engaging a gear, (b) at least temporarily, automatically carrying out vehicle movement monitoring by means of a sensing device; and (c) automatically activating a brake device of the vehicle in order to apply a braking force if the sensing device signals a vehicle movement.

A method is described for detecting a leakage during the operation of a braking system. A braking intention signal characterizing a braking intention is generated by actuating a final control system of an actuating circuit; a setpoint braking pressure required in an active circuit is ascertained based on the braking intention signal; an actual braking pressure in the active circuit is set according to the setpoint braking pressure with the aid of a pressure generation unit by moving a displacement piston to actuate a wheel brake coupled to the active circuit; and a pressure modulation is carried out. The pressure modulation includes setting the actual braking pressure in the active circuit to a value greater than the setpoint braking pressure, and lowering the actual braking pressure until the setpoint braking pressure is reached by moving the displacement piston at a predetermined piston speed. Furthermore, a chronological pressure gradient is ascertained, as the actual braking pressure is being lowered, during the pressure modulation, and a leakage of the active circuit is detected based on the ascertained pressure gradient when the pressure gradient is outside a range predetermined for the piston speed.