See Wiki link below, Taiwan at 12.4 per 100,000 is same rate as the States. I searched it after lots of driving (long distance) in the states and seeing really bad crashes (after, on the side of the highway/turnpikes, ect) I searched the data. It seems Taiwan is not as bad it seems. Places elsewhere where I drive a lot New Zealand, Japan and Ireland/UK have much lower rates, but Malaysia’s rate is very high which surprised me (I though maybe same as Taiwan but much higher)
As for United States, my observation is high speed makes lots of crashes deadly. Such as in poor weather (ice/snow/heavy rain) I see people driving really fast. On ice you need really slow down (Japan seems do a good job on this) but I still see people driving 120kph.