Crash Rating

K-ratings are defined by the US Department of State (DOS) crash test standard. K4 means the barrier stopped a 15,000-lb vehicle at 30 mph. K8 stopped the same vehicle at 40 mph. K12 stopped it at 50 mph. These are destructive test certifications — only products formally tested to the standard can be specified as K-rated.

A security fence is designed to prevent unauthorized human entry using height, anti-climb design, and secure hardware. A crash-rated fence is specifically engineered and tested to stop vehicle-weight impacts. All crash-rated barriers provide security, but not all security fences are crash-rated.

Government-owned facilities often have specific vehicle anti-ram requirements driven by federal security guidelines. Schools and public buildings typically do not require crash-rated fencing by general code, but may specify it following a security assessment. If your security consultant, insurance carrier, or regulatory authority has specified crash resistance, Thrive can assist.