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 230 numbered roads in Connecticut. In 2024 there were 10 fatal crashes and 10 deaths on the road.
A 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 on 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
88 fatal crashes on US 1 in Connecticut from 2015 to 2024 have a known time, too few for any one weekday and time of day to stand out. The worst hour is 10 pm to 11 pm; the worst month is May.
| 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 crash | 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 crash | 1.1 percent, 1 fatal crash | 3.4 percent, 3 fatal crashes | 4.5 percent, 4 fatal crashes | 1.1 percent, 1 fatal crash |
| 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 crash | 3.4 percent, 3 fatal crashes |
| Fri | 1.1 percent, 1 fatal crash | 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
The largest difference from Connecticut: from 2015 to 2024, 51% of fatal crashes on US 1 in Connecticut were at or near an intersection, against 23% across Connecticut. Also above the Connecticut share: hit-and-runs and pedestrians. Below it: rural roads. Shares of fatal crashes from 2015 to 2024, against the share across all of Connecticut. A share is only given over 20 crashes; above or below means more than chance would give on 91 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% | about the same as the Connecticut share |
| A drinking driver | 28% | 34% | about the same as the Connecticut share |
| Speeding | 31% | 33% | about the same as the Connecticut share |
| A distracted driver (as recorded) | 5.5% | 3.4% | about the same as 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% | about the same as 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 on 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. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- 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. Where two routes share a road, NHTSA files each crash under one of them, so a shared stretch counts on one route only. A fatal crash is one in which someone died within 30 days. Totals in state and news reports for a road usually differ: they include ramps and frontage roads, or count from preliminary reports. The full method.