Acoustic medium of ultrasonic grip system consists of piezoelectric generator (1), wheel knuckle (9), ball bearing (10), wheel hub (11), wheel rim (15) and tyre of motor-car (20). The piezoelectric generator (1) creates ultrasound vibrations which are transferred through the acoustic medium to the surface of tyre (17). The ultrasound vibration on the surface of tyre (17) results in the separation of the surface of tyre (17) from the liquid (18) that may be found on tarmac (19) during the rain, which results in the fact that despite the unfavourable weather conditions the motor-car has an optimum rolling surface of tarmac. Also, the vibrations on the surface of tyre (17) in interaction with micro texture of tarmac increases the contact surface of tyre with tarmac, which results in the increase of coefficient of friction, higher grip of tyre and reduction of braking distance of motor-car. The ultrasonic grip system is activated at sudden braking, resp. activation of ABS system. Also, the system is activated on the occasion of activating the ESP and ASR system.

A traction board for insertion under a vehicle's tire for freeing the vehicle from a stuck condition includes an elongated board body and an end plate pivotally connected to an end portion of the elongated board body. According to a further aspect, a traction board includes an elongated board body and a finger pivotally connected to the elongated board body and pivotally extending below the elongated board body in order to prevent the elongated board body from sliding rearward.

A traction board for insertion under a vehicle's tire for freeing the vehicle from a stuck condition includes an elongated board body and an end plate pivotally connected to an end portion of the elongated board body. According to a further aspect, a traction board includes an elongated board body and a finger pivotally connected to the elongated board body and pivotally extending below the elongated board body in order to prevent the elongated board body from sliding rearward.

A tire traction assembly for enhancing traction of vehicle tires on a slippery driving surface includes a pair of traction frames that can each be positioned on a slippery driving surface upon which a vehicle is not capable of driving due to a loss of traction. A plurality of nets is each integrated into a respective one of the traction frames. The plurality of nets includes a set of top nets and a set of bottom nets. Moreover, each of the set of top nets frictionally engages a respective vehicle tire and each of the bottom nets frictionally engages the slippery driving surface when the traction frames are positioned on the slippery driving surface. Additionally, each of the top nets and each of the bottom nets is comprised of a resilient material to resist being deformed by the weight of the vehicle tire.

A liquid sprayer control method to induce drift driving for a vehicle, wherein the control apparatus includes a liquid sprayer attached to a tank of fluid, which in turn has two small hoses aiming towards the rear tires of a vehicle. With a simple push-button controller at the driver’s command, the driver sprays liquid onto the rear tires, coating them for an effective loss of traction of the rear tires, allowing the driver to induce a drift, or intentional loss of rear traction of the vehicle for closed-course exhibition or educational purposes.

A surface conditioning device for railway track rails and/or railway vehicle wheels includes a DC power supply, a supply of gas, a plasma delivery head connected to receive DC power from the power supply and gas from the gas supply, and an igniter for igniting the gas in the plasma delivery head. In use, plasma is generated within the delivery head by ignition of the gas in the delivery head. Plasma with gas is blown from the delivery head onto a railway track rail and/or railway vehicle wheel, thereby conditioning the rail and/or wheel.

Techniques are described for determining whether snow chains are permitted to be used and to deploy snow chains based on traffic signs, weather conditions, and/or road conditions. An example method of autonomous driving operation includes performing a first determination, by a computer located in an autonomous vehicle, whether a use of snow chains is permitted based at least on a location where the autonomous vehicle is operating, performing a second determination that snow chains are required for driving the autonomous vehicle on a road, and sending, in response to the first determination indicating that the use of snow chains is permitted and in response to the second determination, instruction to snow chain devices located on the autonomous vehicle, where the instruction triggers the snow chain devices to deploy snow chains on tires of the autonomous vehicle.

A control apparatus for a vehicle includes a controller configured to (i) calculate, based on a distance and a relative speed between a host vehicle and a forward obstacle, a collision prediction time of a collision between the forward obstacle and the host vehicle; (ii) execute a predetermined control when the collision prediction time is less than or equal to a predetermined threshold, the predetermined control reducing a probability of the collision between the forward obstacle and the host vehicle, and (iii) decrease the predetermined threshold, when an accelerator pedal releasing operation is performed under a situation where the forward obstacle exists, depending on a first distance between the host vehicle and the forward obstacle at a time at which the accelerator pedal releasing operation is performed.

A robotic climbing platform has a chassis and a carriage adapted to support and move the chassis relative to a climbing surface. An adhesion mechanism provides an adhesion force between the climbing platform and the climbing surface. The adhesion mechanism has one or more suction pads adapted to retain an adhesion force between the climbing platform and the climbing surface during movement of the chassis relative to the climbing surface.

Provided is a vehicle wheel stopper. The vehicle wheel stopper includes a bracket, clamping jaws and a telescoping rod assembly. The clamping jaws include a first clamping jaw and a second clamping jaw. Both the first clamping jaw and the second clamping jaw are pivotally connected to the bracket. The telescoping rod assembly includes a telescoping rod set and a gear set. The gear set drives the telescoping rod set to rotate around an axis of the telescoping rod set, and the telescoping rod set simultaneously drives the first clamping jaw and the second clamping jaw so that the first clamping jaw and the second clamping jaw separately have a first state of simultaneously clamping the two spaced wheels and a second state of simultaneously loosening the two spaced wheels. In this device, the wrench rotates the gear set within a range of 360° to further drive the support rod.