Vehicle incursion inhibitors

Abstract

Detailed are systems and techniques for protecting structures from vehicular attack. The systems incorporate deformable materials sufficient to disable or otherwise inhibit certain vehicular traffic yet support weights and weight distributions typically associated with pedestrian or other non-threat traffic. Bodies of deformable materials further may include rigid structures or vehicle-immobilization devices.

1 .- 15 . (canceled) 
     
     
         16 . A system for inhibiting movement of a land-based vehicle in an area traversed by pedestrians comprising an above-grade region comprising deformable material formed as steps or a ramp and configured to (i) deform substantially under weight of the vehicle and (ii) not deform substantially under weight of anticipated loads of pedestrians traversing the area, the deformable material comprising at least one of cellular concrete or foamed glass. 
     
     
         17 . A system according to  claim 16  further comprising at least one vehicle-immobilization device. 
     
     
         18 . A system for inhibiting movement of a land-based vehicle in an area traversed by pedestrians, comprising:
 a. below-grade region comprising a hollow area; and   b. a covering positioned over at least a portion of the below-grade region and configured to fail when subjected to weight of the vehicle to an extent sufficient to prevent movement of the vehicle beyond the below-grade region.   
     
     
         19 . A system according to  claim 18  further comprising at least one vehicle-immobilization device positioned in the hollow area. 
     
     
         20 . A system according to  claim 19  in which the vehicle-immobilization device is selected from the group consisting of tire-puncturing devices and cable-and-hook assemblies.