US 1 in Connecticut: fatal crashes
From 2015 to 2024, 91 fatal crashes on US 1 in Connecticut killed 93 people, the 4th most of any numbered road in Connecticut. In 2024 there were 10 fatal crashes and 10 deaths on the road.
An US route running through 4 counties of Connecticut. All fatal crashes in Connecticut.
Deaths on US 1 in Connecticut by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 10 | 10 |
| 2023 | 10 | 11 |
| 2022 | 13 | 13 |
| 2021 | 5 | 5 |
| 2020 | 11 | 11 |
| 2019 | 6 | 6 |
| 2018 | 6 | 7 |
| 2017 | 6 | 6 |
| 2016 | 18 | 18 |
| 2015 | 6 | 6 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Where on US 1 in Connecticut: the counties with the most fatal crashes
Fairfield County had the most fatal crashes on US 1 from 2015 to 2024: 37, with 39 deaths. Fairfield, New Haven and New London counties together held 96% of fatal crashes in US 1 in Connecticut from 2015 to 2024. Counties are listed from 5 fatal crashes.
| County | 2024 | 2015 to 2024 | Deaths | |
|---|---|---|---|---|
| 1 | Fairfield County | 2 | 37 | 39 |
| 2 | New Haven County | 4 | 35 | 35 |
| 3 | New London County | 2 | 15 | 15 |
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 US 1 in Connecticut
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 | 3.4 percent, 3 fatal crashes | 1.1 percent, 1 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 4.5 percent, 4 fatal crashes | 6.8 percent, 6 fatal crashes |
| Mon | 2.3 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 3.4 percent, 3 fatal crashes | 4.5 percent, 4 fatal crashes | 2.3 percent, 2 fatal crashes | 4.5 percent, 4 fatal crashes |
| Tue | 2.3 percent, 2 fatal crashes | 1.1 percent, 1 fatal crashes | 1.1 percent, 1 fatal crashes | 3.4 percent, 3 fatal crashes | 4.5 percent, 4 fatal crashes | 1.1 percent, 1 fatal crashes |
| Wed | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 2.3 percent, 2 fatal crashes | 3.4 percent, 3 fatal crashes | 3.4 percent, 3 fatal crashes | 5.7 percent, 5 fatal crashes |
| Thu | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 3.4 percent, 3 fatal crashes | 0.0 percent, 0 fatal crashes | 1.1 percent, 1 fatal crashes | 3.4 percent, 3 fatal crashes |
| Fri | 1.1 percent, 1 fatal crashes | 0.0 percent, 0 fatal crashes | 2.3 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 5.7 percent, 5 fatal crashes | 5.7 percent, 5 fatal crashes |
| Sat | 4.5 percent, 4 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 3.4 percent, 3 fatal crashes | 4.5 percent, 4 fatal crashes | 3.4 percent, 3 fatal crashes |
By hour
By month
- Jan4.4%
- Feb6.6%
- Mar6.6%
- Apr7.7%
- May11.0%
- Jun11.0%
- Jul7.7%
- Aug8.8%
- Sep4.4%
- Oct11.0%
- Nov11.0%
- Dec9.9%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What fatal crashes on US 1 in Connecticut first hit
The first harmful event was a collision with another vehicle in 40%; a pedestrian in 34%, a fixed object such as a tree, pole or barrier in 19%, a cyclist in 2.2%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 36 | 40% |
| Pedestrian | 31 | 34% |
| Fixed object (tree, pole, barrier, ditch) | 17 | 19% |
| Cyclist | 2 | 2.2% |
| Rollover | 2 | 2.2% |
| Other | 2 | 2.2% |
| Parked vehicle | 1 | 1.1% |
| 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 US 1 in Connecticut compare with the state
A drinking driver was recorded in 28% of fatal crashes in US 1 in Connecticut from 2015 to 2024, below the Connecticut share of 34%; speeding in 31%, below the Connecticut share of 33%; a hit-and-run in 20%, above the Connecticut share of 8.5%; a driver recorded as distracted in 5.5%, above the Connecticut share of 3.4%; 50% of passenger-vehicle occupants killed with belt use known were unbelted, about the Connecticut share. Shares of fatal crashes from 2015 to 2024, against the share across all of Connecticut. A share is only given over 20 crashes.
| US 1 | Connecticut | ||
|---|---|---|---|
| On rural stretches | 0.0% | 14% | below the Connecticut share |
| At or near an intersection | 51% | 23% | above the Connecticut share |
| In the dark, road unlit | 11% | 17% | below the Connecticut share |
| A drinking driver | 28% | 34% | below the Connecticut share |
| Speeding | 31% | 33% | below the Connecticut share |
| A distracted driver (as recorded) | 5.5% | 3.4% | above the Connecticut share |
| Occupants killed unbelted | 50% | 50% | about the same as the Connecticut share |
| Hit-and-run | 20% | 8.5% | above the Connecticut share |
| A motorcycle involved | 24% | 21% | above the Connecticut share |
| Pedestrians among the dead | 33% | 19% | above the Connecticut 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 US 1 in Connecticut
- How many fatal crashes have there been on US 1 in Connecticut?
- 91 fatal crashes killed 93 people on US 1 in Connecticut from 2015 to 2024. In 2024 there were 10 fatal crashes and 10 deaths.
- Where on US 1 in Connecticut do the most fatal crashes happen?
- Fairfield County had the most fatal crashes on US 1 from 2015 to 2024: 37, with 39 deaths. New Haven County was second with 35.
Other roads in Connecticut with a page
All fatal crashes in Connecticut, with every road ranked.
Where the US 1 numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash whose road NHTSA filed as US 1 in Connecticut (filed under 17 spellings, such as "US-1", "US-1 BOSTON AVE", "US-1 BOSTON POST RD", "US-1 EAST MAIN ST"). Ramps, frontage and service roads are left out. A fatal crash is one in which someone died within 30 days. The full method.