HERE'S HOW IT WORKS: A palm-sized, cylinder-shaped resonator contains a stack of material with a large surface area such as metal or plastic plates, or fibers made of glass, cotton or steel wool. The ...

When cruising at 15.53 miles per hour or slower, an electric car runs virtually silent. Once over that speed, road noise and air moving over the car begin to become prevalent and the car can be “heard ...

After lengthy delays, in 2018 the US finalized regulations for electric cars and other quiet vehicles to emit a sound at speeds under 18.6 mph. The National Highway Traffic Safety Administration's ...

Kymco may have the answer to one of the biggest problems with electric motorcycles by allowing riders to dial in their own motorcycle sound! The Taiwanese scoter company is branching out with their ...