Highway steel barrier systems are safety structures used to enhance traffic safety and prevent vehicles from leaving the road. These barriers prevent vehicles from changing direction or leaving the road during collisions and reduce the risk of injury to passengers by absorbing the energy generated during an accident. Steel barriers are typically used on high-speed roads such as highways, motorways, bridges, and viaducts, or in areas where the road shoulder presents a danger. Made from high-strength steel, these barriers are often coated with hot-dip galvanizing to enhance durability and longevity.
Steel barriers work by preventing vehicles from veering off the road during a collision, providing safety not only to the impacted vehicle but also to other road users. The height, width, and design of the barriers vary depending on the vehicle type and intended use. Typically, they are designed based on the “flexible structure” principle, which absorbs crash energy and slows the vehicle down safely. During impact, some sections of the barrier bend in a controlled manner, dispersing energy and reducing the intensity of the collision.
One of the main advantages of steel barriers is their robust construction, which ensures long-lasting performance with minimal maintenance requirements. Additionally, their modular design allows damaged sections to be easily replaced. Steel barrier systems are produced in accordance with national and international safety standards, and their crash energy absorption and structural integrity are tested and certified, such as with EN 1317 standards, ensuring their reliability.
Feature | Option 1 | Option 2 | Option 3 | Option 4 |
---|---|---|---|---|
Barrier Height | 80 cm | 100 cm | 120 cm | 140 cm |
Barrier Width | 30 cm | 50 cm | 75 cm | 100 cm |
Steel Thickness | 2 mm | 3 mm | 4 mm | 5 mm |
Distance Between Posts | 2 meters | 2.5 meters | 3 meters | 4 meters |
Material | Hot-dip Galvanized Steel | Stainless Steel | Aluminum Alloy | High Strength Steel |
Mounting Type | Anchored | Flanged | Concrete Base Mount | Modular Connection |
Wind Resistance | 100 km/h | 120 km/h | 150 km/h | 180 km/h |
Impact Resistance | N2 (Normal Resistance) | H1 (High Resistance) | H2 (Higher Resistance) | H4b (Highest Resistance) |
Corrosion Protection | Electrostatic Coating | Zinc Coating | Hot-dip Galvanizing | Cathodic Protection |
Reflective Warning Tape | Single-sided | Double-sided | LED Reflective | Phosphorescent Reflective |
Grounding System | Internal Grounding | External Grounding | Equipotential Bonding | Double Grounding |
Usage Area | Highway Shoulders | Bridge Viaducts | Junction Areas | Tunnel Entrances & Exits |
Energy Absorption | 25% | 50% | 75% | 90% |
Post Height | 80 cm | 100 cm | 120 cm | 140 cm |
Maintenance Requirements | Low | Medium | High | Very High |
Standards | EN 1317 | AASHTO M180 | TS EN ISO 1461 | ASTM A123 |
Barrier Color Options | Gray (Galvanized) | Green | Yellow | White |