He confirmed that sound barriers and fences along highways owned and maintained by the state or local government are considered public domain and that signage is not permitted. In this case ...

The Tucker City Council heard about an extensive study measuring noise impact of pickleball courts, which recommended installing sound barriers around the complex to reduce noise levels to the ambient ...

A sleek white aircraft has become the first independently developed jet to break the sound barrier. The XB-1 aircraft accelerated to Mach 1.05 within about 11 minutes of taking off Tuesday.