Comment by emdash

A lot of the regulations to do with vehicles in the US are compliance theater.

We have regulations that make cars take more damage in low speed impacts to make them safer for pedestrians, but pickup trucks with a hood line higher than an average adults head are legal.

In many countries in the EU, vehicles will flash either the brake lights or the signal lights when the ABS system activates to help warn the driver behind them. This has been proven to reduce the rate of multi vehicle accidents. That type of system is still illegal for car makers to use in the US.

Other countries had adaptive headlights that reduced glare for oncoming vehicles for years before the US finally allowed it.