What are the odds of being killed by a motor vehicle while cycling?
Evidence quality 4.75/5
Eight-dimension review score against the quality rubric . Each dimension scored 1–5.
- D1 Source grounding
- 5/5
- D2 Source authority
- 5/5
- D3 Arithmetic
- 5/5
- D4 Uncertainty
- 4/5
- D5 Scope
- 5/5
- D6 Prose
- 5/5
- D7 Perception honesty
- 4/5
- D8 Caveat completeness
- 5/5
Lifetime probability · lifetime, activity-specific
1 in 196
0.5% lifetime chance
Most people underestimate this.
range 1 in 526 to 1 in 77
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≈ As likely as
Perceived
Cyclists who ride regularly report that being hit by a car is the dominant fear shaping their route choices, riding posture, and willingness to cycle at all. The mental model is roughly: drivers are distracted, roads are narrow, one mistake ends everything. What the intuition rarely tracks is the difference between per-trip risk, per-mile risk, and lifetime risk for a person who cycles a specific number of miles per year. The fear operates at the level of vividness — one fatal dooring or overtaking collision is easy to imagine — rather than at the level of frequency.
Rough estimate: feels very high — many regular cyclists consider it a near-certainty over a cycling lifetime
Source: editorial intuition, not polled
Actual
~6.4 deaths per 100 million miles cycled (US, 2019–2023 avg)
US pedalcyclists in motor vehicle traffic crashes (NHTSA FARS, NTSB 2019 study)
Show derivation
The NTSB 2019 safety study estimated approximately 64 US bicyclist deaths per billion miles traveled, or 6.4 per 100 million miles. NHTSA FARS recorded 1,166 pedalcyclist fatalities in motor vehicle traffic crashes in 2023 (down from 1,117 in 2022), consistent with the ~1,000–1,200 range across 2019–2023. Normalizing to a "regular road or urban cyclist" who averages 2,000 miles per year over 40 active cycling years (ages 18–58) gives a lifetime exposure of 80,000 miles. At 6.4 deaths per 100 million miles, that yields a lifetime probability of 80,000 × 6.4e-8 ≈ 0.0051, or about 1 in 195. The uncertainty band reflects variation in annual mileage and trip type: a casual cyclist doing 1,000 miles/year for 30 years (30,000 miles) sits near 0.0019; a high-mileage road cyclist doing 4,000 miles/year for 50 years (200,000 miles) sits near 0.013. The US per-mile fatality rate for cyclists (~6.4/100M miles) is roughly five times the rate for motor vehicle occupants (~1.2/100M miles, BTS 2024), reflecting the lack of occupant protection, not a fundamentally more dangerous activity per trip — most Americans cycle very few miles annually.
Caveats: The per-mile fatality rate from the NTSB 2019 study (~64 deaths per billion mile…
The per-mile fatality rate from the NTSB 2019 study (~64 deaths per billion miles) is the best available US figure but relies on bicycle VMT estimates that have significant uncertainty — the US does not systematically measure bicycle miles traveled the way it measures motor vehicle miles. NHTSA's annual fatality count is accurate (FARS captures all motor-vehicle-involved deaths), but the denominator (total bike miles) is estimated from travel surveys with wide confidence intervals. The lifetime calculation is also sensitive to assumed annual mileage: doubling the assumed mileage doubles the lifetime probability. Cyclists who primarily ride on protected infrastructure (separated bike lanes, off-road trails) face lower exposure than those riding on arterial roads — NHTSA notes 65% of fatalities occur on principal or minor arterials. Alcohol involvement (rider or driver) is reported in 34% of fatal crashes, indicating the underlying distribution is not uniform. The 1 in 195 headline applies to a specific profile; it is not a population-average figure for all US adults, which would be much lower because most Americans cycle very infrequently.
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The headline figure from the NTSB’s 2019 safety study — the agency’s first comprehensive analysis of bicyclist crash risk in nearly five decades — is roughly 64 deaths per billion miles cycled, or about 6.4 per 100 million miles. NHTSA’s Fatality Analysis Reporting System recorded 1,166 pedalcyclist deaths in motor vehicle traffic crashes in 2023, down slightly from the recent peak but still nearly double the 2010 low. For a regular road or urban cyclist averaging 2,000 miles per year over 40 active cycling years — 80,000 miles of lifetime exposure — that rate translates to a lifetime fatality probability of roughly 1 in 195, or about 0.5%. That is not trivial, but it is also not the “near-certainty over a lifetime” that most regular cyclists privately believe they are running.
The comparison that puts the number in context: the per-mile fatality rate for cyclists is approximately five times that of motor vehicle occupants. That gap is real and reflects the absence of crumple zones, airbags, and steel cages around a cyclist. What it does not mean is that cycling is five times as dangerous as driving per trip — the average car trip is many times longer than the average bike trip, and the typical American cyclist logs very few miles annually. The IIHS notes that deaths among adult cyclists (20 and older) have increased almost fivefold since 1975, which runs in the opposite direction from the steady long-term decline in motor vehicle occupant death rates over the same period. Eighty-one percent of the fatalities occur in urban areas, and 65% occur on principal or minor arterials — the fast, wide roads where cyclists and fast-moving vehicles share space with the least physical separation.
Where the intuition goes wrong is less in direction than in magnitude. Cycling on arterial roads with motor vehicle traffic does carry a real and measurable fatal risk, and the NTSB’s international comparison is pointed: the US rate is roughly five times Germany’s and more than seven times the Netherlands’ rate, differences that track almost exactly with infrastructure investment rather than with the inherent danger of the activity. The 53% of fatalities that occur in dark conditions, and the 34% involving alcohol in either the rider or the driver, identify the highest-leverage modifiable factors. Lighting and route choice on arterial roads move the personal risk number substantially. The 1 in 195 headline applies to a specific exposure profile; a casual cyclist on shared-use paths sits much closer to the low end of the uncertainty range than the headline, and a high-mileage road cyclist on unlit rural roads sits well above it.
Claim ledger
Every number below is what each source reported, with the verbatim quote we relied on and how we arrived at our figure. Click any link to verify directly.
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[1] National Transportation Safety Board (NTSB) — Bicyclist Safety on US Roadways: Crash Risks and Countermeasures (SS-19/01)
Bicyclist Safety on US Roadways: Crash Risks and Countermeasures (SS-19/01)- Statistic
Approximately 64 bicyclist fatalities per billion miles traveled in the US; 783 bicyclists killed in motor vehicle crashes in 2017; from 2010 to 2017 annual deaths ranged 623–840- Excerpt
“"The U.S. bicycling fatality rate — measured in deaths per billion miles traveled — is nearly five times as high as it is in Germany and more than seven times as high as it is in the Netherlands and Denmark." ”
- Source data from
- 2019-11-01
- Accessed
- 2026-05-04 · archived copy
- Calculation
- The NTSB figure of ~64 deaths per billion miles (= 6.4 per 100 million miles) is the primary exposure-normalized rate used for the native statistic. To convert to a lifetime probability for a regular cyclist, multiply the per-mile rate by total lifetime miles: 80,000 miles (2,000/year × 40 years) × 6.4e-8 per mile ≈ 0.0051.
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[2] National Highway Traffic Safety Administration (NHTSA), National Center for Statistics and Analysis — Traffic Safety Facts 2023 Data: Bicyclists and Other Cyclists (DOT HS 813 739)
Traffic Safety Facts 2023 Data: Bicyclists and Other Cyclists (DOT HS 813 739)- Statistic
1,166 pedalcyclist fatalities in motor vehicle traffic crashes in 2023, representing 2.9% of all traffic fatalities; 81% occurred in urban areas; 62% at non-intersection locations; 87% of those killed were male- Excerpt
“"In 2023 there were 1,166 pedalcyclist fatalities, accounting for 2.9 percent of all traffic fatalities." ”
- Source data from
- 2025-01-01
- Accessed
- 2026-05-04 · archived copy
- Calculation
- NHTSA FARS 2023 provides the most recent annual fatality count. The 1,166 figure is used to confirm that the NTSB per-mile rate remains plausible: if US cyclists collectively travel ~18 billion miles/year (rough estimate from American Community Survey trip data and NHTS), then 1,166 / 18,000,000,000 ≈ 6.5 deaths per 100 million miles, consistent with the NTSB figure. NHTSA FARS is the upstream source for all US traffic fatality counts and is treated as the primary authority.
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[3] Insurance Institute for Highway Safety (IIHS) — Fatality Facts 2023: Bicyclists
Fatality Facts 2023: BicyclistsSee all 2 Likelier entries citing this source →
- Statistic
1,155 bicyclists killed in traffic crashes in 2023; about 2% of motor vehicle crash deaths are bicyclists each year; deaths among bicyclists age 20 and older have increased almost fivefold since 1975- Excerpt
“"There were 1,155 bicyclists killed in 2023, and each year about 2% of motor vehicle crash deaths are bicyclists." ”
- Source data from
- 2024-12-01
- Accessed
- 2026-05-04 · archived copy
- Calculation
- IIHS uses a slightly different coding methodology than NHTSA FARS, producing a 2023 figure of 1,155 vs NHTSA's 1,166. Both are used as corroboration that the annual US cyclist fatality count from motor vehicle crashes is reliably in the 1,100–1,200 range in recent years. The IIHS trend data also establishes that fatality counts have risen substantially since 2010 (from a low near 620), which means the per-mile rate used may slightly understate current risk if cycling miles have not grown proportionally.