Abstract: A street-lighting pole incorporates a vibration-reducing means on the upper end part of a pole provided standing vertically, wherein: the upper end part of the pole is formed so as to have a silicone receiving part of which the upper part is open in such a way that silicone oil can be stored to a predetermined level on the inside thereof; a removable cap is constituted so as to couple in removable fashion to an upper intake part of the silicone receiving part; a resilient supporting body of a predetermined length is constituted in the center of the removable cap; and a mass of a predetermined weight is constituted at the lower end part of the resilient supporting body.

Abstract: The invention relates to a method and an installation for providing an aircraft with alignment guidance during the approach stage. At least three flashing lights are disposed on either side of the runway and directed towards an approaching aircraft. The beam directions and the timing of the light flashes are such that the pilot of an aircraft lying on the axis of the runway sees the two lights closest to the runway flash simultaneously, whereas the pilot of an aircraft that is too far to one side or the other of the axis of the runway sees a series of light flashes that appear to be running towards the axis of the runway.

Abstract: Optical guidance system for the night landing of aircraft on a landing area along a determined approach path, which comprises two horizon reference luminous bars (1, 2) disposed in alignment with each other in a horizontal direction substantially perpendicular to the approach path, and two azimuth overshoot indicating lamps, respectively to the left (5) and to the right (6), located at the outer ends of the pair of horizon reference bars and provided with masks (8) in order that they can only be seen by the aircraft if the latter overshoots the approach path in azimuth to the left and to the right respectively.