I-H1 in Hawaii: fatal crashes
From 2015 to 2024, 34 fatal crashes on I-H1 in Hawaii killed 36 people, the 5th most of any numbered road in Hawaii. In 2024 there were 6 fatal crashes and 7 deaths on the road.
An interstate running through 1 county of Hawaii. All fatal crashes in Hawaii.
Deaths on I-H1 in Hawaii by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 6 | 7 |
| 2023 | 8 | 9 |
| 2022 | 1 | 1 |
| 2021 | 3 | 3 |
| 2020 | 3 | 3 |
| 2019 | 4 | 4 |
| 2018 | 4 | 4 |
| 2017 | 2 | 2 |
| 2016 | 3 | 3 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Where on I-H1 in Hawaii: the counties with the most fatal crashes
Honolulu County County had the most fatal crashes on I-H1 from 2015 to 2024: 34, with 36 deaths. Counties are listed from 5 fatal crashes.
| County | 2024 | 2015 to 2024 | Deaths | |
|---|---|---|---|---|
| 1 | Honolulu County | 6 | 34 | 36 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
When fatal crashes happen on I-H1 in Hawaii
Too few crashes to name a heaviest slot. The grid shows the shares; a share is only given over 20 crashes.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 8.8 percent, 3 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 8.8 percent, 3 fatal crashes |
| Mon | 0.0 percent, 0 fatal crashes | 2.9 percent, 1 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 2.9 percent, 1 fatal crashes | 0.0 percent, 0 fatal crashes |
| Tue | 2.9 percent, 1 fatal crashes | 2.9 percent, 1 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 5.9 percent, 2 fatal crashes |
| Wed | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 2.9 percent, 1 fatal crashes | 2.9 percent, 1 fatal crashes | 0.0 percent, 0 fatal crashes |
| Thu | 2.9 percent, 1 fatal crashes | 5.9 percent, 2 fatal crashes | 2.9 percent, 1 fatal crashes | 2.9 percent, 1 fatal crashes | 0.0 percent, 0 fatal crashes | 14.7 percent, 5 fatal crashes |
| Fri | 5.9 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 2.9 percent, 1 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes |
| Sat | 8.8 percent, 3 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 5.9 percent, 2 fatal crashes | 5.9 percent, 2 fatal crashes |
By hour
By month
- Jan2.9%
- Feb5.9%
- Mar5.9%
- Apr2.9%
- May5.9%
- Jun14.7%
- Jul0.0%
- Aug20.6%
- Sep5.9%
- Oct8.8%
- Nov8.8%
- Dec17.6%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Fatal crashes per mile on I-H1 in Hawaii
12.52 fatal crashes a year per 100 miles over 2015 to 2024, on 27 miles of I-H1 in Hawaii, against 12.52 for all interstates in Hawaii. That ranks 1 of 1 interstates in Hawaii and 44 of 171 interstate pages on this site.
Mileage from the FHWA Interstate route log (table 1), the only figure here not counted from FARS. Crashes per mile of road, not per vehicle: FARS records crashes, not traffic.
What fatal crashes on I-H1 in Hawaii first hit
The first harmful event was a fixed object such as a tree, pole or barrier in 35%; a collision with another vehicle in 29%, a pedestrian in 21%, a parked vehicle in 8.8%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Fixed object (tree, pole, barrier, ditch) | 12 | 35% |
| Collision with another vehicle | 10 | 29% |
| Pedestrian | 7 | 21% |
| Parked vehicle | 3 | 8.8% |
| Other | 2 | 5.9% |
| Cyclist | 0 | 0.0% |
| Rollover | 0 | 0.0% |
| Not reported | 0 | 0.0% |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
How fatal crashes on I-H1 in Hawaii compare with the state
A drinking driver was recorded in 35% of fatal crashes in I-H1 in Hawaii from 2015 to 2024, above the Hawaii share of 32%; speeding in 71%, above the Hawaii share of 44%; a hit-and-run in 8.8%, about the Hawaii share. Shares of fatal crashes from 2015 to 2024, against the share across all of Hawaii. A share is only given over 20 crashes.
| I-H1 | Hawaii | ||
|---|---|---|---|
| On rural stretches | 0.0% | 17% | below the Hawaii share |
| At or near an intersection | 0.0% | 25% | below the Hawaii share |
| In the dark, road unlit | 5.9% | 19% | below the Hawaii share |
| A drinking driver | 35% | 32% | above the Hawaii share |
| Speeding | 71% | 44% | above the Hawaii share |
| Occupants killed unbelted | Not enough data | 52% | |
| Hit-and-run | 8.8% | 9.6% | about the same as the Hawaii share |
| A motorcycle involved | 44% | 27% | above the Hawaii share |
| Pedestrians among the dead | 25% | 27% | below the Hawaii share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Questions about fatal crashes in I-H1 in Hawaii
- How many fatal crashes have there been on I-H1 in Hawaii?
- 34 fatal crashes killed 36 people on I-H1 in Hawaii from 2015 to 2024. In 2024 there were 6 fatal crashes and 7 deaths.
- Where on I-H1 in Hawaii do the most fatal crashes happen?
- Honolulu County had the most fatal crashes on I-H1 from 2015 to 2024: 34, with 36 deaths.
- How dangerous is I-H1 in Hawaii per mile?
- 12.52 fatal crashes a year per 100 miles over 2015 to 2024, on 27 miles of road, against 12.52 for all interstates in Hawaii. That ranks 1 of 1 interstates in Hawaii and 44 of 171 interstate pages on this site. FARS records crashes, not traffic, so this is crashes per mile of road, not per vehicle.
Other roads in Hawaii with a page
All fatal crashes in Hawaii, with every road ranked.
Where the I-H1 numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash whose road NHTSA filed as I-H1 in Hawaii (filed under 2 spellings, such as "I-H1", "I-H1 WEST"). Ramps, frontage and service roads are left out. A fatal crash is one in which someone died within 30 days. The full method.