How an HVM gate is crash tested: simulations, a 7.5 tonne truck, ASTM and IWA

There is only one way to find out what a barrier does when a truck hits it, and it is not a calculation. Building a gate that can physically stop a hostile vehicle takes more than good design. It takes rigorous testing, in two stages.

Simulation: the first step

Before any HVM product reaches the market, it goes through advanced simulation. Engineers predict how the reinforced gate structure will behave under vehicle impact, analysing stress distribution, energy absorption and deflection long before a physical crash test takes place.

This is not a formality. Physical crash tests are expensive and destructive, so simulation makes sure that when a vehicle finally hits the barrier, it is the right barrier. It is also where the design is refined: sections, connections and the geometry of the structure that has to absorb the impact.

The crash test: the ultimate proof

Simulation alone is not enough. The reinforced gate was crash tested at the CTS laboratory in Münster, Germany. In the test, a 7.5 tonne truck struck the gate at 50 km/h.

The result did more than stop the vehicle. The gate stopped the truck and pushed it back, achieving a penetration rating that exceeded ASTM and IWA requirements. That gives specifiers concrete, measurable evidence of the barrier's anti-ram capability rather than a marketing claim.

What ASTM and IWA actually measure

Two standards dominate international practice, and the HVM version is rated against both. Both describe the same core variables, and a rating means little without them.

• Vehicle mass. A barrier rated against a small car is a very different object from one rated against a 7.5 tonne truck.

• Impact speed. Energy rises with the square of speed, so the test speed is central to the rating.

• Penetration. How far past the barrier line the vehicle travelled. This is what actually protects the space behind it.

When a specification simply says anti-terror certified, it has told you nothing. Ask for the mass, the speed and the penetration result.

How testing shapes future designs

Vertical retractable designs benefit directly from this continuous research. Simulation and crash testing improve current HVM products and shape future ones, aiming for even better vehicle impact performance while keeping the discreet, minimalist form that defines the approach. The reinforced structure delivers the protection, and the vertical mechanism keeps it out of sight until it is needed.

Keeping the two products separate

Worth repeating, because the industry is careless about it. This testing and certification applies specifically to the reinforced HVM version. The standard Fancy Fence system is a distinct product for everyday access control and entrance management, and it is not crash tested or presented as vehicle impact protection. Keeping those two apart is what makes the HVM claim credible in the first place.

Technical documentation for specification is available in the Architect's Area, and early stage geometry can be set in the gate configurator.

Frequently asked questions

Where was the Fancy Fence HVM gate crash tested?

At the CTS laboratory in Münster, Germany.

What were the test conditions?

A 7.5 tonne truck struck the gate at 50 km/h. The gate stopped it and pushed it back, exceeding ASTM and IWA requirements.

Does the certification apply to the standard gate?

No. It applies only to the reinforced HVM version. The standard system is a separate access control product.