State Highway 15 in Connecticut: fatal crashes
From 2015 to 2024, 71 fatal crashes on State Highway 15 in Connecticut killed 78 people, the 7th most of 230 numbered roads in Connecticut. In 2024 there were 5 fatal crashes and 9 deaths on the road.
A state highway running through 3 counties of Connecticut. All fatal crashes in Connecticut.
Deaths on State Highway 15 in Connecticut by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 5 | 9 |
| 2023 | 7 | 7 |
| 2022 | 8 | 9 |
| 2021 | 9 | 10 |
| 2020 | 9 | 9 |
| 2019 | 4 | 4 |
| 2018 | 8 | 8 |
| 2017 | 11 | 12 |
| 2016 | 5 | 5 |
| 2015 | 5 | 5 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Where on State Highway 15 in Connecticut: the counties with the most fatal crashes
New Haven County had the most fatal crashes on State Highway 15 from 2015 to 2024: 32, with 35 deaths. New Haven, Hartford and Fairfield counties together held 100% of fatal crashes on State Highway 15 in Connecticut from 2015 to 2024. Counties are listed from 5 fatal crashes.
| County | 2024 | 2015 to 2024 | Deaths | |
|---|---|---|---|---|
| 1 | New Haven County | 2 | 32 | 35 |
| 2 | Hartford County | 2 | 22 | 23 |
| 3 | Fairfield County | 1 | 17 | 20 |
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 State Highway 15 in Connecticut
70 fatal crashes on State Highway 15 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 1 am to 2 am; the worst month is November.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 7.1 percent, 5 fatal crashes | 2.9 percent, 2 fatal crashes | 1.4 percent, 1 fatal crash | 1.4 percent, 1 fatal crash | 1.4 percent, 1 fatal crash | 2.9 percent, 2 fatal crashes |
| Mon | 2.9 percent, 2 fatal crashes | 4.3 percent, 3 fatal crashes | 1.4 percent, 1 fatal crash | 1.4 percent, 1 fatal crash | 0.0 percent, 0 fatal crashes | 1.4 percent, 1 fatal crash |
| Tue | 4.3 percent, 3 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 1.4 percent, 1 fatal crash | 4.3 percent, 3 fatal crashes | 4.3 percent, 3 fatal crashes |
| Wed | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 1.4 percent, 1 fatal crash | 1.4 percent, 1 fatal crash | 2.9 percent, 2 fatal crashes | 5.7 percent, 4 fatal crashes |
| Thu | 4.3 percent, 3 fatal crashes | 2.9 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 1.4 percent, 1 fatal crash | 2.9 percent, 2 fatal crashes | 1.4 percent, 1 fatal crash |
| Fri | 1.4 percent, 1 fatal crash | 1.4 percent, 1 fatal crash | 1.4 percent, 1 fatal crash | 1.4 percent, 1 fatal crash | 4.3 percent, 3 fatal crashes | 8.6 percent, 6 fatal crashes |
| Sat | 2.9 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 1.4 percent, 1 fatal crash | 1.4 percent, 1 fatal crash | 4.3 percent, 3 fatal crashes | 4.3 percent, 3 fatal crashes |
By hour
By month
- Jan5.6%
- Feb5.6%
- Mar8.5%
- Apr7.0%
- May9.9%
- Jun5.6%
- Jul11.3%
- Aug8.5%
- Sep7.0%
- Oct7.0%
- Nov18.3%
- Dec5.6%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What fatal crashes on State Highway 15 in Connecticut first hit
The first harmful event was a collision with another vehicle in 35%; a fixed object such as a tree, pole or barrier in 35%, a pedestrian in 18%, a rollover in 4.2%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 25 | 35% |
| Fixed object (tree, pole, barrier, ditch) | 25 | 35% |
| Pedestrian | 13 | 18% |
| Rollover | 3 | 4.2% |
| Other | 3 | 4.2% |
| Cyclist | 1 | 1.4% |
| Parked vehicle | 1 | 1.4% |
| 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 State Highway 15 in Connecticut compare with the state
The largest difference from Connecticut: from 2015 to 2024, 35% of fatal crashes on State Highway 15 in Connecticut were in the dark on unlit roads, against 17% across Connecticut. Below the Connecticut share: rural roads and motorcycles. 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 71 crashes.
| State Highway 15 | Connecticut | ||
|---|---|---|---|
| On rural stretches | 1.4% | 14% | below the Connecticut share |
| At or near an intersection | 16% | 23% | about the same as the Connecticut share |
| In the dark, road unlit | 35% | 17% | above the Connecticut share |
| A drinking driver | 39% | 34% | about the same as the Connecticut share |
| Speeding | 30% | 33% | about the same as the Connecticut share |
| A distracted driver (as recorded) | 2.8% | 3.4% | about the same as the Connecticut share |
| Occupants killed unbelted | 40% | 50% | about the same as the Connecticut share |
| Hit-and-run | 5.6% | 8.5% | about the same as the Connecticut share |
| A motorcycle involved | 8.5% | 21% | below the Connecticut share |
| Pedestrians among the dead | 23% | 19% | about the same as 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 State Highway 15 in Connecticut
- How many fatal crashes have there been on State Highway 15 in Connecticut?
- 71 fatal crashes killed 78 people on State Highway 15 in Connecticut from 2015 to 2024. In 2024 there were 5 fatal crashes and 9 deaths. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- Where on State Highway 15 in Connecticut do the most fatal crashes happen?
- New Haven County had the most fatal crashes on State Highway 15 from 2015 to 2024: 32, with 35 deaths. Hartford County was second with 22.
Other roads in Connecticut with a page
All fatal crashes in Connecticut, with every road ranked.
Where the State Highway 15 numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash whose road NHTSA filed as State Highway 15 in Connecticut (filed under 3 spellings, such as "SR-15", "SR-15 BERLIN TPKE", "SR-15 BERLIN TPKE"). 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.