Vehicle barrier system

An adaptable vehicle security barrier system comprising:

• a curb positioned between a trafficable surface and a bed, the curb extending above the trafficable surface to direct a vehicle upwardly so that at least a portion of the vehicle descends into the bed;
• the bed configured to substantially resist deformation under pedestrians and to deform under the weight of a vehicle so that an elevation of the vehicle is lowered;
• an impact element having a height and an impact resistance suitable to stop a vehicle after the elevation of the vehicle is lowered by the bed;
• so that the vehicle is prevented from progressing substantially beyond the impact element.

A security barrier system for use with a trafficable surface for vehicles and a site requiring protection from advancing vehicles, comprising:

• a bed adjacent to the trafficable surface, the bed comprising a deformable material having a strength sufficient to support non-vehicular traffic, but insufficient to support the weight of a vehicle to thereby lower an elevation of a vehicle that encounters the bed;
• a curb between the trafficable surface and the bed, the curb having a height extending above the trafficable surface;
• a pedestrian tread surface comprising a decorative paving material arranged on top of the bed to distribute pedestrian loads on the bed;
• and
• an impact resistant barrier adjacent to the bed, the impact resistant barrier having a height configured to impact and stop a lowered vehicle that traverses the bed.