Temporary Road Barriers – How to Correctly Secure Construction Sites and Roadworks
- Kristof
- Jul 13, 2026 views
- 70
Securing Construction Sites and Roadworks – Why Temporary Barriers are Crucial Delineators
Properly securing construction sites and roadworks is not only a legal obligation for developers and contractors, but above all, a key element in protecting human life and health. On road sections undergoing infrastructure modernization, normal traffic flow is often disrupted, which significantly increases the risk of collisions and accidents. In such locations, temporary road barriers are indispensable tools. Their main purpose is to physically separate the work zone from the active traffic lane. With their bright colors and option for reflective tapes, they warn drivers well in advance. This allows for smooth lane changes and safe speed reductions before encountering obstacles. The choice of the right barrier type depends on the nature of the work, the road category, and the speed of vehicles on the given section.
Plastic Traffic Barriers – Lightweight, Delineation, and Fast Setup
Plastic traffic barriers are among the most common solutions used on city streets, parking lots, or restricted areas. Made of high-quality High-Density Polyethylene (HDPE), they feature exceptional resistance to mechanical damage and weather conditions. A plastic traffic barriers (such as U-14 or U-25 types) is hollow inside, making transport, loading, and manual arrangement by workers very easy. Once placed on the road, they can be filled with water or sand to achieve full stability and wind resistance. The market offers various heights, including 50 cm versions, such as the red U-14/U-25 red barrier, and larger 80 cm versions. Their modular design allows individual units to be quickly linked into continuous barriers, which is ideal for lane separation or creating temporary roundabouts during road repairs.
Concrete Jersey Barriers – Maximum Safety and Protection at High Speeds
In high-risk collision areas, highways, and expressways, lightweight plastic barriers may not offer sufficient protection. In these situations, a more robust solution like a concrete jersey barrier is necessary, such as the concrete jersey barriers. Made of high-grade reinforced concrete (usually C30/37), these barriers feature a massive weight ranging from several hundred kilograms to multiple tons. The specially designed Jersey profile lifts and redirects the colliding vehicle back onto its lane, minimizing chassis damage and preventing rollovers. Crucially, it prevents the vehicle from breaking through the barrier into oncoming traffic or directly into the path of road workers. Concrete barriers are commonly used for long-term roadworks and as permanent lane separators. Their installation requires heavy equipment like cranes, but the safety level provided is unmatched.
Delineation Differentiators – Plastic vs. Concrete Barriers
The decision between a plastic and a concrete barrier depends on the specific project requirements. Plastic models are ideal for fast-moving works, emergency utility repairs, or short-term city setups. They are cheap to transport and fast to assemble. On the other hand, concrete barriers are the foundation of safety for deep excavations, multi-year highway renovations, and high-speed environments. The following table provides a comparison of their key parameters to help you make the right choice.
| Parameter | Plastic Traffic Barrier U-14/U-25 | Concrete Jersey Barrier |
|---|---|---|
| Empty Weight | Approx. 6-15 kg | From 400 to over 2000 kg |
| Delineator Stabilization | Water or sand filling | Massive self-weight of concrete |
| Mobility and Delineation | Very high (easy manual handling) | Heavy machinery required (crane) |
| Containment Level | Medium (for low-speed urban areas) | Very high (highways and expressways) |
| Recommended Use | City roads, parking lots, events | National roads, expressways, highways |
Expert Tip: When filling plastic traffic barriers with water in winter, make sure to add an anti-freeze agent or use sand instead. Freezing water expands and can crack the polyethylene shell, causing permanent damage to the barrier.
Frequently Asked Questions (FAQ)
Are temporary road barriers required by law?
Yes, securing roadworks within public right-of-ways is strictly regulated. Every temporary traffic management plan must specify the exact type and placement of traffic control devices, including temporary barriers, to ensure the safety of both road users and construction crews.
What are the main benefits of water-filled plastic barriers?
Water-filled plastic barriers combine lightweight transportation and setup with high stability once filled. Due to the flexibility of the polyethylene, they absorb impact energy well, minimizing vehicle damage and protecting the driver while preventing the barrier from shifting into the work zone.
When is it mandatory to use heavy concrete barriers instead of plastic ones?
Heavy concrete jersey barriers must be used in high-traffic zones with speed limits exceeding 60 km/h, such as major national roads and highways. They are also mandatory near deep excavations close to the roadway to prevent vehicles from falling into the trench.
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