These structures are designed to allow passage of wind, thus avoiding its fall and it will mobile characteristics. Green Noise Barriers include innovative substrate and specific vegetal species in order to avoid negative effect of traffic noise (even 15dB of reduction) with a minimum maintenance (guarantying theirs sustainability). It is taken into account the use of anti-allergy plant.
This NBS creates some modifications in the environment so there are some disadvantages of removing it in the future.
The period of recovery of the initial economic investment of the NBS is between 10 and 20 years.