Abstract: A method detects a defect in an acceleration sensor. In order to be able to reliably detect a defect in an acceleration sensor, the acceleration sensor generates a signal which is checked during a test as to whether a variable dependent on the signal fulfills a predefined condition with respect to a reference value and, on the basis of the test, it is determined whether the acceleration sensor is defective.

Abstract: A covering for a bogie of a rail vehicle lends the entire rail vehicle a low aerodynamic tractive resistance in the region of the bogie. The novel covering has a peripheral wall for surrounding the bogie and a fastening device for rotationally guiding the peripheral wall at the upper edge thereof on a superstructure of the rail vehicle. The covering is covered at the lower edge of the peripheral wall by an underbody-like end member that has fastening means for attaching the same to the bogie.

Abstract: A covering for a bogie of a rail vehicle lends the entire rail vehicle a low aerodynamic tractive resistance in the region of the bogie. The novel covering has a peripheral wall for surrounding the bogie and a fastening device for rotationally guiding the peripheral wall at the upper edge thereof on a superstructure of the rail vehicle. The covering is covered at the lower edge of the peripheral wall by an underbody-like end member that has fastening means for attaching the same to the bogie.

Abstract: A rail vehicle includes an underbody which is subjected to thrown up ballast when the rail vehicle is operating on a ballasted section of track. In at least one embodiment, the underbody is equipped with at least one acoustic signal pickup which acoustically senses ballast stones striking the underbody; a signal processing device is provided to which a signal is fed from the at least one acoustic signal pickup and which processes the signal in such a way that a thrown up ballast signal is generated which represents the impacting of ballast stones on the underbody; and the thrown up ballast signal from the signal processing device is included in a mode of operation of the rail vehicle.

Abstract: A rail vehicle includes an underbody which is subjected to thrown up ballast when the rail vehicle is operating on a ballasted section of track. In at least one embodiment, the underbody is equipped with at least one acoustic signal pickup which acoustically senses ballast stones striking the underbody; a signal processing device is provided to which a signal is fed from the at least one acoustic signal pickup and which processes the signal in such a way that a thrown up ballast signal is generated which represents the impacting of ballast stones on the underbody; and the thrown up ballast signal from the signal processing device is included in a mode of operation of the rail vehicle.