Traditionally, the performance of roadside noise barriers has been improved simply by increasing their height. While effective, this approach often leads to higher costs, greater visual impact, and structural limitations.
Recent developments show that the top edge geometry of a barrier plays a crucial role in sound diffraction. By engineering this edge, it is possible to significantly improve acoustic performance without substantially increasing barrier height.
This shift marks an important step from purely structural solutions toward acoustically optimized noise barrier design.
In many infrastructure projects, noise protection is treated as an afterthought — with costly consequences. From vague tenders to real-life failures, this article explores why many noise barriers don't deliver what communities need — and what planners, clients, and local authorities can do differently.
📍 Including a striking case from the A2 motorway near Vienna.
👉 Read more to discover where the real gap lies – and how to close it.