Patent ID: 7736086

Claim:
A vehicle arresting device comprising a flexible substrate adapted to be laid on the ground in an approach path of a vehicle to be arrested with at least two transverse rows of upwardly-directed spikes attached to the substrate at a leading portion thereof such that when the front tires of a vehicle run over said leading portion one or more said spikes become embedded in each said tire, thereby attaching the substrate to each front wheel of the vehicle, the substrate becomes wrapped around the front wheels of the vehicle and the portion thereof between those wheels of the vehicle is pulled tight under the vehicle, thereby preventing further rotation of those wheels, the spikes in a following said row being longer than the spikes in the leading said row, and a first transverse portion of the substrate, to which said leading row of spikes is attached and which extends rearwardly thereof towards said following row of spikes, is of a first grade of material, and a second transverse portion of the substrate, to which said following row of spikes is attached and which extends rearwardly thereof at least for some distance, is of a second grade of material heavier than said first grade.