Dana's article looked at existing modeling methods for their ability to calculate the noise reduction of short barriers. These barriers are commonly constructed along highways for safety reasons. However, their noise reduction potential requires the identification of noise modeling techniques to ensure that such models can accurately predict noise reduction in the surrounding community.
The article documents the findings of Dana's research, which were also presented at the 2022 TRB Annual Meeting. These findings include the observation that shorter sound walls (3 to 6 feet in height) may be an option to reduce noise in surrounding communities in cases where taller sound walls are considered cost-prohibitive under current FHWA policy.