Solution

The multifunctional barrier

The multifunctional barrier consists of a novel traffic barrier with the capacity to reduce noise, NOx and PM caused by motorized vehicles. Both capacities will be integrated in the same road infrastructure. The outside of the barrier will provide the noise reduction capacity (and the partial reduction of NOx with photocatalytic coating) while its inside will contain a biofilter to capture NOx and PM by extracting and filtering the polluted air. This nature-based infrastructure will also provide additional benefits: it will be aesthetically pleasing, pollinator-friendly, and offer additional leaf area for passive capture of PM, etc.

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