Why would there need to be a sound barrier between two things that are both noisy? The only unique thing here is the passenger train running right next to the freeway. But what’s the problem? And don’t tell me the problem is “noise.” Trains & cars are both noisy. If you want a sound barrier, put on noise-canceling headphones.
Why would there need to be a sound barrier between two things that are both noisy? The only unique thing here is the passenger train running right next to the freeway. But what’s the problem? And don’t tell me the problem is “noise.” Trains & cars are both noisy. If you want a sound barrier, put on noise-canceling headphones.
Maybe OP was complaining about the noise the trains make from the perspective of the cars? /s