DEVICE REDUCING SPEED OF VEHICLES TRAVELLING ON A ROADWAY

摘要

Self-adjustable and deformable projection of variable height for reducing the speed of vehicles travelling on a roadway, comprising at least one strip of flexible material, rubber or other similar material, made up of several hollow fluid-filled chambers. The chambers are interconnected by a calibrated conduit which enables the controlled passage of the filling fluid from the chamber flattened by the vehicle wheel to the adjacent chambers, this device acting as a means for control of the resistance which the strip offers to the deformation thereof depending on the impact speed of the vehicle against the strip. The filling fluid can be water or a non-newtonian liquid, of those which increase their viscosity the greater the pressure applied thereto, in which case the fluid itself acts as a means of control of the resistance to deformation of the strip.