How do speed bumps deter speeding? Do they damage vehicles?

they are not really "meant" to damage vehicles. this, however, does not mean that they can't. it is supposed to be a very uncomfortable effect, which it is, and i suppose if you were going really fast over one, it could damgage the car. or if you had a very low car and you scd a bumper off or something. i live in michigan and we have the most horrid roads you can imagine. going by how poorly our roads are maintained, you can hit a speed bump sized pothole or otherwise on the highway and not worry. so from this i would say that to damage your car you would have to be going very very fast, or have it very low.