Nah. People can’t drive a bus or a semi without a CDL. It’s not hard to get, sure, but you still have to go through at least some training and weeding out process, because those vehicles are more dangerous than a car. Bigger SUVs are now reaching that point, particularly if standard safety infrastructure is not designed for them. Once you hit that point, any person’s freedom to drive it is outweighed by the freedom of everyone else to not be threatened by it. We can either redo every damn road in America, while also accepting much higher death rates, or we can limit these larger vehicles. Pretty obvious what the better option is.

I’m not quite sure what you mean by “regulation”. Increasing the cost, such as by mandating higher and more comprehensive insurance, or instituting a gas tax are both regulatory measures.