Hybrid cars are great for the environment (or at least your wallet), but they are ridiculously quiet when running only on the electric engine.
This is dangerous for blind pedestrians who rely on the noise that cars make to stay safe. Blind advocates are lobbying legislators to pass regulations requiring that hybrids be outfitted with a noise-making solution to help keep the blind and other pedestrians safe.
They hope that there is good solution to the problem that doesn't have "cars going down the street beeping like those little carts do in the airport," said Michael Gosse, president of the National Federation of Blind of Maryland. "I think that would be pretty annoying."