| 摘要 |
<p>A device designed to be embedded in the pavement of a road for halting and/or preventing the motor vehicle traffic in an opposite direction. The device is formed by a drained box to be embedded in the pavement of a roadway and by a bank of mechanisms, that it is mounted inside the box. Inside the bank of mechanisms are defined cells formed by several vertical walls, and end walls, all walls being arranged parallel to each other and joined together by screwed rods extending through the end walls. The walls extend in the same direction as the road axis, the vertical walls and the end walls serving as support for several common horizontal shafts, and their tops serving as the support pavement for the vehicle tires. Each cell includes a driving mechanism which is activated at least by one tire of a vehicle transposing or attempting to transpose it in order to present an active obstacle to the displacement of the vehicle.</p> |
