FIND YOUR PERFECT

SOLUTION

Protecting
what matters most

For more than 15 years, REBLOC develops and manufactures crash-tested precast concrete barrier systems to protect people all over the world when out on the road. Today, we apply this proven expertise to an equally important mission: keep people safe wherever vehicles pose a deliberate threat.

As the risk of hostile vehicle attacks has become an unfortunate part of reality, safeguarding public spaces, critical infrastructure, and major events have become more important than ever. At REBLOC, we believe in making a real difference when putting engineering expertise into use, particularly by preventing vehicle intrusion, but ultimately by helping to save lives.

This is how it works. Developed from our proven concrete barrier technology, REBLOC DEFENCE combines certified protective performance with the practical advantages of precast concrete construction. The modular system allows rapid and flexible deployment, simple transport and storage, and sustainable multiple re-use, making it suitable for both temporary and permanent installation.

Whether protecting city centers, pedestrian areas, transport hubs, stadiums, public events, or critical infrastructure, REBLOC DEFENCE is engineered to deliver reliable protection where it matters most.

REBLOC DEFENCE is tested and certified in accordance with ISO 22343, providing verified performance against hostile vehicle threats. It is the combination of our experience in precast concrete engineering and vehicle impact performance, that makes REBLOC DEFENCE a safe, reliable, and efficient Vehicle Security Barrier solution to help protect what matters most: our people and places.

Vehicle Impact

Energy Calculator

Kinetic Energy
Ekin = ½mv²
Ekin = ½ × 1,500 kg × (22.22 m/s)²
370.37 kJ
Vehicle classification
Selected class M1
Passenger car · 1,500 kg
Vehicle mass (m) 1,500 kg
M1 · 1,500 kg N3G · 30,000 kg
Vehicle speed (v) 80 km/h
16 32 48 64 80 96 112
N2 and N3 test vehicles are defined at 80 km/h.
Impact angle (α) 20°
5° 90° perpendicular
Total Kinetic Energy (90°)
370.37 kJ
Normal Impact Component
43.33 kJ
Normal velocity: 27.4 km/h
E⊥ = ½m(v × sin α)²
Impact angle 20°
M1 Passenger car
20°
Vehicle Restraint System
½ speed 10.83 kJ
→
Selected 43.33 kJ
→
2× speed 173.31 kJ
The comparison above uses the currently selected impact angle. Doubling the speed still results in four times the normal impact energy.
Understanding the result
Vehicle mass More mass means more kinetic energy. Doubling the mass doubles the energy.
Vehicle speed Speed has a much stronger influence. Doubling the speed results in four times the kinetic energy.
Impact angle The angle determines how much of the vehicle velocity acts perpendicular to the restraint system.
0° would represent motion parallel to the barrier, while 90° represents a perpendicular impact. This calculator starts at 5°. The normal impact component is a simplified physical representation and does not equal the actual energy absorbed by the restraint system.