Nothing wrong with it, if you stick to the advised speed. It works and works well. Far cheaper and extends the life of the road significantly.
Nothing wrong with it? Don't be so completely daft, they are horrendous on anything with 2 wheels, and positively dangerous for pedestrians when there is a pavement next to the road. It damages cars, increases the risk of accidents and the resulting road surface is very short lived.
Yeah, nothing wrong with it at all
