Uh.. accidental deaths are the #1 cause of death between the age 1 and age 44 in the US.

https://www.cdc.gov/injury/wisqars/pdf/10lcid_all_deaths_by_...

And the largest part of that has until recently been car accidents (comprising the larger transportation related catagory)

http://www.techtimes.com/articles/164522/20160612/car-crashe...

Now apparently its drug overdose, which is one of those cases where intent (aka suicide) isn't always clear.

But by far the most dangerous thing your average american does everyday is get in a car, and that is by a large margin.

*this is why the focus on "terrorism" and "gun control" both piss me off, seatbelt, airbag, backup cameras, etc laws save more lives every month than all the terrorism related activity in the last couple decades, despite the government spending orders of magnitude more on the latter.