speed bumps and really low speed limits. They took a car that got 58-mpg running a constant 30-MPH, and ran it over speedbumps at the Millbrook Proving Ground, slowing down and speeding up for ...

A Spanish company has designed a speed bump that won't hinder slow drivers but will still stop motorists driving too fast. The speed bump is filled with a non-Newtonian liquid which changes ...

How can a speed bump be green? Simple. If it does its job right and rewards low speed driving and punishes ... the bump flattens. If the car is going too fast it remains upright and does what ...