Skip to Content
Streetsblog USA home
Streetsblog USA home
Log In
Transportation Policy

America’s Car Culture is Literally Shortening Your Life: Study

The U.S. has been falling behind its peer nations on traffic safety and now life expectancy as well. There’s a connection. Graph: WHO

Driving is driving us to the grave.

Life expectancy at birth declined steeply in the U.S. in 2015 and 2016, a new British Journal of Medicine study reports — a finding that was attributed partly to the opioid crisis, but also to America's ongoing traffic violence problem.

In 16 peer nations studied, life expectancy at birth was fairly steady over the same period, but dropped by .2 years in the United States — a decline that is two-and-a-half times worse than the dip in 2012.

The researchers said that about 42 percent of the shortfall is due to the opioid crisis. But the leading cause for declining longevity remains "external factors" such as traffic fatalities, which is blamed for 44 percent of the decline, the study said.

Study author Jessica Ho, a gerontology professor at the University of Southern California, didn't address the role of traffic accidents in this study, but told Streetsblog that an earlier study found that traffic fatalities accounted for 18 percent of the "life expectancy shortfall" for men under 50, and 16 percent for women in the same age range between 2006 and 2008 compared to similar nations.

So while the opioid addiction grabs headlines, cars have quietly remained a leading killer. In 2015, for example, the U.S. traffic fatality rate jumped 9 percent. And in 2016, it jumped again 5.6 percent, wiping out nearly a decade of improvements. It was the biggest two-year jump in 50 years.

Traffic fatalities have long been a leading cause of death of Americans, and in 2015, they were the 13th leading cause of death in the U.S. overall. But because cars kill a disproportionately high number of younger people, they rank seventh in total years of life lost.

Other Western nations have been making far faster progress on reducing traffic fatalities than the U.S. The Centers for Disease Control sounded the alarm last year, reporting that between 2000 and 2013, traffic deaths per capita in the U.S. dropped at just under half the rate of 19 peer nations. Our death rate per capital is roughly double that of Canada and France.

Stay in touch

Sign up for our free newsletter

More from Streetsblog USA

Friday Video: Guess Which Argument Can Get a NIMBY To Change Their Mind About New Housing

Put your instincts to the test with this fascinating experiment about the power of messaging to win support for urbanism.

March 20, 2026

Friday’s Headlines Took the Road Less Traveled By

And that has made all the difference, when it comes to preventing traffic deaths.

March 20, 2026

Study: How Ambiguous Definition of ‘Major Transit Stop’ Creates Wiggle Room for Municipalities

This is a story of how well-intentioned efforts by the state to tie new development to transit hinge on how local governments (with their own incentives) interpret broad state law.

March 19, 2026

Talking Headways Podcast: Growing St. Louis’s Arts and Culture District

This week on Talking Headways, step inside St. Louis's Grand Center Arts District with the people who make it happen.

March 19, 2026

Advocates Get D.C. Mayor To Release Buried Report On The Potential Benefits Of Congestion Pricing

How many other conversations about congestion pricing across the country are being suppressed — and how many have never even gotten started?

March 19, 2026
See all posts