| 摘要 |
<p>The invention concerns a device for restriction of the speed of road vehicles. It comprises a number of interconnected profile bodies (1) arranged to be placed on a roadway (7) in the transverse direction thereof. On the roadway (7), each profile body (1) forms a hump having its maximum height at the middle portion. When a vehicle is driven over the restriction device a thump and a heavy sound bang occur in the vehicle, cautioning the driver to reduce the speed.</p> |
