The document describes a road blocker that is designed and manufactured by engineers with experience in high security and access controls. Road blockers come in segment widths of 2 to 5 meters and have a maximum height of 800mm when raised. They are electro-hydraulically operated and have a programmable logic control that enables connection to various access control systems. Key features include widths of 3 to 5 meters, a power supply of 230V 50Hz, a loading capacity of 30 tons, and a typical operating speed of 6 seconds to raise or lower.