Motorcycles can become unstable when operating at high speeds and at high cornering levels. For example, they can exhibit an oscillation at the rear wheel commonly known as “weave.” A system and method is provided which utilizes a high-fidelity computer simulation model of a 2- or 3-wheel motorcycle to predict operating states such as yaw rate, lateral acceleration and roll angle for a stable motorcycle at a given speed and steer angle. The operating state of a physical motorcycle can be measured and compared to that of the model at every instant in time to determine if the operating state of the physical motorcycle differs from that of the simulation model in such a way as to indicate loss of stability. The nature of that difference can then be used to intervene in the operation of the motorcycle independent of driver actions by application of brakes, modulating the engine torque or applying torques to urge the steering system in a corrective direction. Thus by comparing the physical response of the motorcycle to that of the computer model in an on-board controller these interventions can be applied at a time and intensity to stabilize the motorcycle and prevent a loss of control.

A method for damping a lateral pendular motion of a single-track motor vehicle having a front wheel, where—the presence of a pendular motion is ascertained, and—the moment of inertia of the front wheel is increased as a function of it.

A method for damping a lateral pendular motion of a single-track motor vehicle having a front wheel, where—the presence of a pendular motion is ascertained, and—the moment of inertia of the front wheel is increased as a function of it.

A method as well as a device are described for use in a two-wheeler, in particular in an at least partially electrically drivable bicycle. In this context, the lift-off of at least one wheel is initially detected and a jump is inferred therefrom, possibly while utilizing further sensor signals. Then the risk is calculated that this jump may cause a rollover, e.g., over the handlebars or in the backward direction. In the event that this is the case, the at least one lifting-off wheel is acted upon in such a way that a counter torque is generated that counteracts the rotary motion leading to the rollover.

There is provided a two-wheeled vehicle overturn prevention method, wherein maximum allowable lean angles corresponding to vehicle body velocities are preset in relation to lean angles of a vehicle body, and in a case where an actual lean angle of the vehicle body exceeds a maximum allowable lean angle corresponding to an actual vehicle body velocity of the vehicle body or in a case where an estimated lean angle of the vehicle body after a predetermined amount of time exceeds or looks to exceed a maximum allowable lean angle corresponding to an estimated vehicle body velocity, the two-wheeled vehicle overturn prevention method is adapted to accelerate the vehicle body or keep the vehicle body from decelerating.

There is provided a two-wheeled vehicle overturn prevention method, wherein maximum allowable lean angles corresponding to vehicle body velocities are preset in relation to lean angles of a vehicle body, and in a case where an actual lean angle of the vehicle body exceeds a maximum allowable lean angle corresponding to an actual vehicle body velocity of the vehicle body or in a case where an estimated lean angle of the vehicle body after a predetermined amount of time exceeds or looks to exceed a maximum allowable lean angle corresponding to an estimated vehicle body velocity, the two-wheeled vehicle overturn prevention method is adapted to accelerate the vehicle body or keep the vehicle body from decelerating.

To provide a driver alert system capable of improving the safety. A bicycle includes a first transmission circuit transmitting a first ultrasonic wave, a first receiving circuit receiving a second ultrasonic wave, an arithmetic circuit detecting the presence or absence of an object from the second ultrasonic wave, and a second transmission circuit transmitting a third ultrasonic wave. A driver wears a second housing including a second receiving circuit receiving the third ultrasonic wave. The arithmetic circuit includes a first selection circuit selecting a potential based on the second ultrasonic wave at a different timing, a plurality of signal retention circuits retaining a potential based on the second ultrasonic wave, a second selection circuit selecting any one of the plurality of signal retention circuits, and a signal processing circuit to which a signal selected in and output from the second selection circuit is input. The second selection circuit selects the plurality of signal retention circuits at different timings to generate a signal obtained by delaying the second ultrasonic wave. The third ultrasonic wave generated on the basis of the signal is transmitted to the second housing.

An invention is a saddle type vehicle comprising a lighting device, and an operator configured to perform a driving operation of a direction indicator, characterized in that the lighting device is configured to irradiate a part of a road surface on a front to lateral side of the saddle type vehicle in accordance with input of an operation of showing an intention of route change to the operator by a driver of the saddle type vehicle.

An invention is a saddle type vehicle comprising a lighting device, and an operator configured to perform a driving operation of a direction indicator, characterized in that the lighting device is configured to irradiate a part of a road surface on a front to lateral side of the saddle type vehicle in accordance with input of an operation of showing an intention of route change to the operator by a driver of the saddle type vehicle.

An invention relates to the field of electronic vehicle control systems, in particular electric bicycles intended for heavy loads. The intelligent electronic bicycle control system includes a controller to control electric motor, a throttle handle, a sensor, a battery, a communication module for transferring data on a movement and condition of electric components and to exchange data with a mobile application and a remote control, an alarm, a light controller to control light, turns and stop signals and audio signal, a controller for collisions prevention and a bicycle computer to display the main parameters of the system, and all elements are connected by a bus. Enhanced functionality.