| 摘要 |
Devices (A, B) providing a calibrated deceleration according to the colliding vehicle, used for the controlled displacement of road safety barriers, of the New Jersey type, installed on the sides of a bridge, and in particular those made of concrete (1, 1') or steel. The components of the devices (A, B) are fixed to the base of the modules making up the barrier and/or to the curbstone (2), and allow the displacement of the barrier, for several centimetres, notwithstanding its high weight, also in case of an impact caused by an automobile whose impact energy is less than 65-70 kJ. The purpose of said devices is that of allowing the displacement of the barrier through a reduction of the friction forces. |
