A self-driving telescopic post includes a cap, a brake, a directional bearing and an axle. The cap includes comprising a central aperture in communication with a chamber. The brake is inserted in the chamber. The directional bearing is inserted in the cap and engaged with the brake. The axle is inserted in the central aperture and supported by the directional bearing. The axle is allowed to rotate in a first sense of direction relative to the directional bearing so that the brake does not interfere with the rotation of the axle in the first sense of direction via the directional bearing. The axle is prevented from rotation in a second sense of direction relative to the directional bearing so that the brake interferes with the rotation of the axle in the second sense of direction via the directional bearing.