Research Projects

Project at a Glance

Project Status: active

Title: Effectiveness of Sound Wall-Vegetation Combination Barriers as Near-Roadway Pollutant Mitigation Strategies

Principal Investigator / Author(s): Paulson, Suzanne

Contractor: UC Riverside

Contract Number: 13-306

Research Program Area: Atmospheric Processes

Topic Areas: Field Studies, Modeling, Sustainable Communities

Research Summary:

Although California has made tremendous strides in reducing vehicular emissions, a large body of evidence indicates increased exposure to traffic-related pollutants near busy roadways remains a concern. As California pursues infill development near transit as a greenhouse gas reduction strategy, there may be significant implications for near-roadway exposure. Strategies to reduce this exposure are needed; however, a stronger understanding of the effectiveness of potential mitigation options, and in particular sound wall (barrier) and vegetation combinations, is required. This project proposes a multi-basin, California-specific study to characterize the effectiveness of sound and vegetative barriers in dispersing and removing traffic-related pollutants. The results will provide insights into the value and best practices for siting and design of sound walls, and vegetation in combination with sound walls, to reduce downwind pollution from busy roadways.


For questions regarding this research project, including available data and progress status, contact: Heather Choi at (916) 322-3893

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