Abstract: A device for controlling the angular position of turning headlamps of motor vehicles comprises a correcting hydraulic circuit connecting an auxiliary distributor to the hydraulic circuit transmitting control power. The distributor is adapted to alternately be connected to a source of hydraulic liquid under pressure and to an exhaust for discharging liquid. The distributor permits a compensation for any reduction in the initial volume of the liquid in the control transmission circuit or a discharge of any excess liquid, such reduction or excess being due to variations in the thermal condition of the liquid in the circuit. Means are also provided for neutralizing the correcting circuit in all angular positions of the steering mechanism other than the straight-ahead driving position.

Abstract: This invention relates to a control unit with which is equipped a vehicle provided with a steering wheel coupled to the rotary member controlling the steering members, comprising at least two control members disposed on the side opposite the driver with respect to the steering wheel, whilst these members have actuating surfaces whose centres define, with the axis of the rotary member, half-planes shifted by a first angle. The directions perpendicular to the actuating surfaces and passing through the centres are contained in planes parallel to the axis which form a second angle larger than the first, whilst the intersection is disposed with respect to the plane parallel to the axis of the rotary member and containing the centres of the two actuating surfaces, substantially on the side where said axis is itself disposed.This invention may be applied to the production of a dashboard providing greater safety.