When and why did they stop making and made illegal to use suicide knobs?

yea I wonder why some people answer too, It depends on what state you live in. Here in oregon they are legal and they are sold in auto parts stores. But these are the cheap ones that are no good. the good ones are usually at a place that sells adaptive equipment for adaptive vehilces you can probably buy some good ones off the internet after doing some research. Some states have banned them because if the knob is in a bad position in an accident your body can hit it wrong and it pretty much kills you dead. I try to avoid accidents like that, and have had these suicide knobs for many years and never had any trouble from law enforcement.