"We are pleased to help protect our men and women in uniform from the threat of terrorist car bombings," says Delta scientific senior vice president David Dickinson "It is absolutely imperative to our national security that only the best and strongest barricade systems are installed to safeguard them"

Set in a foundation only 18 inches (46 cm) deep, the Delta DSC501 will survive and operate after a 5.4 million foot pound impact. That's equivalent to a 65,000-pound (29,484 kg) truck hitting it at 50 mph (80 kph). Stopping the truck dead in its tracks, the DSC501 protects against a "second hit" risk from a second vehicle.

When a car going 60 mph (96 kph) is detected within 90 feet (27.6 m), the DSC501 raises in only one second, time for the barricade to provide protection. In the lowered position, the DSC501's barrier ramp is completely flush with the roadway. Buttresses, counterweights and road plates do not obstruct authorized pedestrian or vehicular traffic. The DSC501 is raised and lowered to and from the guard position via hydraulic cylinders driven by Delta's patent-pending hydraulic power unit. This unit can be configured to operate one or more DSC501 barriers.

The DSC501 is suitable for high water table locations and areas with corrosive soils. The shallow foundation obviates the concerns of interference with buried pipes, power lines and fiber optic communication lines. This foundation also reduces installation complexity, time, materials and corresponding costs.

A recently-introduced DSC501RL (remote locations) model incorporates a new special locking system that prevents terrorists from disabling or dismantling it. It was created especially for remote applications, such as at dams and other out-of-the-way locales. In such locations, it is kept in the "up" position. With the DSC501RL, the harder a terrorist works at attempting to immobilize this barrier to get a vehicle through, the tighter the unit actually locks up.