How many people die in car accidents each year? According to Fatal Accident Reporting System (FARS) data retrieved from the National Highway Traffic Safety administration, there were 35,092 traffic fatalities in the United States in 2015. That's an average of nearly 100 per day. Of those, 10,396 took place on U.S. highways and interstates alone. This isn't to say the United States has the world's most dangerous roads; in fact, according to the World Health Organization, the United States is in the top 25 safest per billion kilometers driven. Still, there are highways and interstates that see an above average number of fatal car accidents each year. This data visualization reveals the top 25 most deadly highways in the Untied States, the number of deaths per mile, the most common months, days, and time for fatal accidents to occur on those highways, and the most common causes of those accidents.

Here are the top 25 most dangerous highways in America by fatalities per mile:
Highway and Starting and ending points | Deaths per mile of highway |
I-4 |
1.250 |
I-45 |
1.018 |
US-192 |
.867 |
I-17 |
.843 |
I-95 |
.730 |
I-10 |
.703 |
US-175 |
.685 |
I-37 |
.650 |
US-290 |
.632 |
I-78 |
.625 |
I-75 |
.599 |
I-26 |
.590 |
US-199 |
.575 |
I-20 |
.569 |
I-85 |
.568 |
I-5 |
.531 |
I-35 |
.479 |
I-65 |
.475 |
I-59 |
.465 |
US-17 |
.432 |
I-40 |
.431 |
I-84 (Pennsylvania-Massachusetts) |
.422 |
I-15 |
.420 |
US-1 |
.414 |
I-44 |
.407 |