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How Many People Die in Roadway Departure Crashes Each Year?

Published 5 min read By Live Accident Tracker Editorial

Quick answer: An estimated 18,241 people died in roadway departure crashes in the United States in 2024, according to NHTSA's early estimates — 46% of all traffic deaths that year. The toll fell 6% from 19,328 in 2023, but roadway departure is still the single largest crash type behind American road deaths. A roadway departure crash is one in which a vehicle crosses an edge line or a centre line, or otherwise leaves the travelled way.

What counts as a roadway departure crash

The Federal Highway Administration defines a roadway departure crash as one that occurs after a vehicle crosses an edge line or a centre line, or otherwise leaves the travelled way — running off the road into a ditch, or crossing the centre line into oncoming traffic and colliding head-on.

That distinction matters. Wrong-way crashes are a different, smaller category: a driver travelling against the flow on a divided highway. A roadway departure crash can happen on any road — a single vehicle ending against a tree, a pole or a barrier, or a head-on crash after a drift across the centre line.

The count is a crash type, not a cause: speeding, impairment, distraction and tiredness all overlap with it, so the figures below must not be added to other categories.

The 2024 numbers in full

NHTSA's CrashStats report DOT HS 813 729, published in May 2025, gives early estimates of 2024 traffic deaths by sub-category, based on the Fatality Analysis Reporting System (FARS):

  • An estimated 18,241 people died in roadway departure crashes in 2024, 46% of all traffic deaths.
  • In 2023, 19,328 people died in roadway departure crashes, 47% of the total that year.
  • The roadway departure toll fell 6% from 2023 to 2024.
  • Total traffic deaths were an estimated 39,345 in 2024, down about 3.8% from 40,901 reported in 2023.
  • The overall fatality rate was 1.20 deaths per 100 million vehicle miles travelled in 2024, down from 1.26 in 2023.

Deaths in crashes that stayed on the roadway were an estimated 21,104 in 2024, down 2%; single-vehicle crashes killed an estimated 21,211, down 3%; multi-vehicle crashes an estimated 18,134, down 5%; and speeding-related deaths were an estimated 11,033, down 6%. Speeding overlaps with roadway departure, so the two tolls must not be added together.

Its share slipped from 47% to 46% because the fall was slightly faster than the fall in deaths overall. Even so, nearly half of everyone killed on American roads died in this one kind of crash.

Where the deaths happen

The rural share is the heavier one:

  • Rural areas recorded an estimated 16,461 traffic deaths in 2024, down 2% from 2023.
  • Urban areas recorded an estimated 22,884 deaths, down 5%.
  • Deaths on rural interstates rose 3%, the only road class in the report to go up.
  • Deaths on urban interstates fell 6%, on urban arterials 5%, and on urban collector and local roads 6%.

Why these crashes kill so many people

A roadway departure crash is dangerous for a simple reason: once a vehicle leaves the travelled way, there is nothing left to protect the people inside it. Off the road, the vehicle meets a tree, a pole, a ditch or a barrier, or it rolls over, or it meets oncoming traffic head-on after crossing the centre line.

Deaths at night fell 5% and deaths during the day fell 2%. Deaths in passenger vehicle rollover crashes fell 6%, and deaths among ejected occupants fell 9% — both closely tied to departures, because a vehicle that leaves the road is far more likely to roll or to throw an unrestrained occupant out.

That is also why the seat belt figures in the same report matter here. Unrestrained passenger vehicle occupant deaths fell 8% in 2024, but they remain a large part of the toll. A belt cannot stop a vehicle leaving the road, but it decides whether the people inside survive what happens next. Our Thanksgiving crashes article tells the same story: 45% of the 286 people killed over the 2024 weekend were not wearing a seat belt.

What is being done about it

Because the crash starts with a vehicle leaving its lane, much of the work is on the road itself. The Federal Highway Administration's roadway departure programme covers rumble strips on the centre line and shoulder, which warn a drifting driver with sound and vibration; wider edge lines; guardrails and barriers; and better delineation and signing on curves, where departures are most common.

None of these measures comes with a promised percentage in the NHTSA report, and this article claims none. What the report shows is a broad fall: deaths fell in almost every sub-category it tracks, and roadway departure deaths fell with them, by 6%.

For the wider picture, 12,036 people died in intersection-involved crashes in 2022. For the first cold mornings, see our snow and ice crashes article.

How these numbers were counted

All figures come from NHTSA's CrashStats report DOT HS 813 729, "Early Estimates of Motor Vehicle Traffic Fatalities and Fatality Rate by Sub-Categories in 2024", published in May 2025: NHTSA CrashStats DOT HS 813 729. The 2024 figures are early estimates, scaled up from the fatal crash cases coded into FARS so far to the estimated total of 39,345 deaths; the 2023 figures come from the FARS 2023 Annual Report File.

The 18,241 figure is an estimate, not a final count, and it belongs to this vintage only. NHTSA's later Traffic Safety Facts note DOT HS 813 791, published in April 2026, gives a final 2024 total of 39,254 deaths — a different vintage, so the 18,241 estimate must not be used to calculate a share of 39,254. FARS counts people who died within 30 days of the crash, and the latest year can be revised as records are completed.

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