| 摘要 |
PCT No. PCT/FI89/00213 Sec. 371 Date Jul. 2, 1991 Sec. 102(e) Date Jul. 2, 1991 PCT Filed Nov. 21, 1989 PCT Pub. No. WO90/05809 PCT Pub. Date May 31, 1990.A device for impeding the motion of a land vehicle is provided including a net having a first and a second end wherein the ends are separated to provide an elongated net arranged for grabbing a motor vehicle. A first braking device and a second braking are provided. The first braking device includes structure for slowing down the motion of the vehicle, and the second braking device includes structure for further slowing down and stopping the motion of the vehicle. The first and second members of the first braking device are shorter in length than the first and second members of the second braking device, such that the first and second braking device function stepwise with the first braking device braking the net first, and the second braking device braking the net second. The net is also formed of warp elements defining a vehicle wheel engaging structure which extends around the wheel of the vehicle when the vehicle runs over the net.
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