A method for classifying an accident event of a two-wheeled vehicle, in particular a bicycle. The method can be run in the form of an algorithm in a device comprising an analysis unit in order to indicate to the rider or a third party that the two-wheeled vehicle has been involved in a collision or has fallen over using a corresponding generated and/or transmitted item of information. The device can be used in a two-wheeled vehicle, such as a bicycle or in particular in an electric bicycle. However, it can of course also be used in a motorcycle or another single-track vehicle.

Coupling spots are properly protected upon reception of gas pressure. A seam is possessed as a partition that partitions the interior of an airbag, and the seam is a coupling spot along which a frontal-side base fabric and a backside base fabric are coupled to each other. First and second reinforcing fabrics are provided on inner sides of the frontal-side base fabric and the backside base fabric, and the first and second reinforcing fabrics have remaining margins that are oriented toward the gas supply side in the downward direction rather than toward the seam, and each of the remaining margins functions as a shield wall against a flow of gas toward the seam.

Gas is properly fed into a head facing portion while upsizing of an inflator is prevented. Throttle portions are provided for coupling between a frontal side and a backside of an airbag between a neck portion and a head facing portion. Seams are formed as contours of the throttle portions positioned outermost the airbag in a width direction. The seams are parallel to side edge portions, of the airbag positioned outside the seams in the width direction. Seams are formed as contours opposed to the throttle portions arranged adjacent to each other. The seams are approximately parallel to each other.

Control for airbag deployment and/or the like is facilitated in a simple configuration. An airbag includes upper vent holes and lower vent holes. The upper vent holes are placed upward of the head facing portion and are open to an occupant side. The lower vent holes are placed downward of the upper vent holes and are open to the opposite side from an occupant.

A method for identifying a polarity of a freewheeling diode interconnected in parallel to an inductive actuator for a safety unit for a vehicle. The method includes applying a test current to a terminal of the freewheeling diode and carrying out a comparison between a voltage present at the terminal and a threshold voltage while the test current is being applied, a result of the comparison indicating the polarity of the freewheeling diode.

A safety system for a motor bike includes an evaluation and control unit which receives crash-relevant information from at least one sensor unit and evaluates it for the purpose of detecting a crash, and in response to a detected crash, the evaluation and control unit activates at least one external safety component and/or at least one internal safety component using a triggering concept. The evaluation and control unit receives presence signals from the at least one external safety component and/or the at least one internal safety component and evaluates the received signals in order to detect the safety components currently available. The evaluation and control unit selects the triggering concept as a function of the detected safety components currently available.

An airbag system (1) for a powered saddle-ride type vehicle (100) is provided. The system comprises a housing (2): an airbag (6) arranged in said housing (2); and an inflator (7). The housing (2) is elongated and is configured to face the driver, and the housing (2) is configured to be fixedly mounted to a leg shield (102) next to the steering column (101) of the vehicle (100) in an area between handlebars (104) of the vehicle and a foot support (105) of the vehicle. The elongated housing (2) is configured to be mounted in a substantially horizontal direction, transverse to a longitudinally extending centreline (CL) of the vehicle (100). The inflator (7) is configured to allow the airbag (6), in the event of an activation signal, to inflate and deploy symmetrically on opposite sides of the longitudinally extending centreline (CL) of the vehicle (100) to thereby fill an available space between the vehicle and the driver's pelvis, abdomen, thorax and head area. Further, a powered saddle-ride type vehicle is provided.

Embodiments disclose systems and methods associated with safety devices for vehicles. Specifically, embodiments are directed towards a user operated, manually controlled, inflatable safety device for off-road vehicles, which may reduce, eliminate, or lessen upper body and head injuries.

In a method for activating a personal protection device for a motorcycle, which personal protection device has at least one airbag that is capable of being deployed in a region facing away from a driver of the motorcycle, in front of a front fork and/or in front of a front windshield and/or in front of a front headlight of the motorcycle, a collision signal is read in that represents a collision or an impending collision of the motorcycle, and subsequently an activation signal is provided, using the collision signal, in order to activate the personal protection device and deploy the at least one airbag.

An object is identified by an on-board camera and a relative speed of the vehicle and the object is acquired. If the object is a two-wheel vehicle and the relative speed is lower than the vehicle speed, the relative speed is set as a collision speed. If the object is an object other than a two-wheel vehicle, the vehicle speed is set as the collision speed. Using the set collision speed, an effective mass is computed and collision determination is executed.