Abstract: Reflex measuring apparatus for determining the reactivity of a driver, or respectively, his ability to drive a vehicle under conditions including under the influence of alcohol or drugs, tiredness, stress or normal effects of age. Reflex measuring apparatus includes s a steering wheel of a vehicle that acts as a sensor for measuring the reaction time span of the driver, a signaling device soliciting the reaction of the driver, a device to record a time span between the solicitation by the signaling device and a reaction of the driver (e.g. an analogue or digital chronograph), and a seat provided with a safety belt. The apparatus can be activated when a driver takes place on the seat.

Abstract: A steering control for vehicles, such as for automobiles or motorcycles in the form of a steering wheel or of a handlebar, with a gripping zone presenting an elastically variable geometry deformable under the action of the hand or the hands of the driver gripping the steering control fast and forcefully in case of danger. Thus, in the event of panic, an hydraulic or pneumatic sensor located inside the gripping zone is activated. The sensor extends over essentially the whole gripping zone of the steering control that can be gripped by at least one hand of the driver, and includes a tube of elastic material, filled with a liquid, and embedded entirely in a foamed plastic material. The steering control exhibits then high effectiveness and reliability of a safety device, in the elimination of potential danger caused by mistaken reactions of the driver, and in the economic feasibility of the inventive device.