Langdon, NH truck route planning & crash data
Plan safer truck routes in Langdon: commercial truck and garbage truck crashes in Langdon and Sullivan County, dangerous roads, seasonality and route safety data for fleets. Patterns use Sullivan County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
2 of 127 truck crashes since 2015.
Deadliest roads
How Sullivan County compares with New Hampshire
Sullivan County against New Hampshire and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Sullivan County stands out
Full comparison
| Measure (2015–2025) | Sullivan County | New Hampshire | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 25.4 | 30.4 | 49.7 | 16% below the state |
| Deaths per 100 crashes | 8.1 | 2.6 | 3.4 | 3.1× the state |
| Injuries per crash | 0.50 | 0.39 | 0.49 | 1.3× the state |
| Garbage-truck share | 1.6% | 4.2% | 2.3% | 61% below the state |
| On snow, slush or ice | 30.1% | 20.2% | 6.2% | 1.5× the state |
| Morning rush (6–10 am) | 27.6% | 29.3% | 23.7% | same |
| In rain, sleet or snow | 31.7% | 22.8% | 13.8% | 1.4× the state |
| Winter months (Nov–Mar) | 56.1% | 47.6% | 41.9% | 1.2× the state |
| After dark | 11.4% | 16.3% | 24.8% | 30% below the state |
Sullivan County has lower values than New Hampshire for crashes per 100k residents / yr, garbage-truck share and after dark. It stands out for higher deaths per 100 crashes, injuries per crash and on snow, slush or ice.
What stands out in Sullivan County: 8.1 people killed per 100 truck crashes (New Hampshire: 2.6).
Overview
Police reported 127 crashes involving commercial trucks in Sullivan County since 2015: 62 people were injured and 10 were killed.
In complete reporting years that works out to about one truck crash every 33 days.
Only 4 truck crashes were reported in Langdon since 2015; patterns below come from Sullivan County as a whole.
When crashes happen
Truck crashes peak in March (15.0% of the year) and are lowest in August (2.4%).
The five winter months (November to March) hold 56.1% of truck crashes, against 47.6% across New Hampshire.
More truck crashes happen at 1–2 pm than at any other hour (11.0%).
30.1% of truck crashes here happened on snow, slush or ice, against 20.2% across New Hampshire.
Where crashes happen
Within this area, SR-12 had the most fatal crashes involving a large truck since 2015 (3). It is followed by SR-123 (1) and Ts- 5 (1).
Garbage & waste trucks
Garbage and refuse trucks were involved in 2 crashes, 1.6% of the total, against 4.2% across New Hampshire.
Route planning tips for Langdon fleets
- Review driver schedules for March, the month with the most truck crashes.
- Look at alternatives to SR-12 at busy times: it leads this area in fatal truck crashes.
- With 30.1% of truck crashes on snow, slush or ice (above New Hampshire), plan winter equipment checks early.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Sullivan County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-12 | 3 |
| SR-123 | 1 |
| Ts- 5 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Sullivan County) |
|---|---|
| S Main St | 4 |
| Main St | 3 |
| Bellows Falls Rd | 2 |
| Ft S Of 89 N & 47.4 | 2 |
| Intersection Of 2Nd Nh Tpk & Nh Rt 10 | 2 |
| N Mm 40 | 2 |
| Sunapee St | 2 |
| Washington St | 2 |
Langdon at a glance
| Population | 664 |
| Land area | 16.2 sq mi |
| Density | 41 per sq mi |
| Median household income (ZIP 03602) | $70,455 |
| Median home value (ZIP 03602) | $279,196 |
Waste facilities and haulers nearby
Historical data: truck crashes in Sullivan County since the 1990s
Combines the FMCSA crash file (all reported truck crashes, real coverage from about 1990) with NHTSA FARS (fatal crashes involving a large truck, 1982–2024).
| Decade | Truck crashes / yr | Change | Fatal crashes / yr (FARS) |
|---|---|---|---|
| 1990s | 9 | — | 0.5 |
| 2000s | 10 | +11% | 0.4 |
| 2010s | 11 | +11% | 0.3 |
| 2020s | 13 | +20% | 0.8 |
In the 1990s about 9 truck crashes a year were reported; in the 2020s, about 13. Reporting coverage also changed between these periods. NHTSA counts 0.5 fatal large-truck crashes a year in 2016–19 and 0.8 a year in 2020–24.
Nearby places
Questions fleets ask about Langdon
How common are truck crashes in Langdon?
Since 2015, 127 crashes involving commercial trucks were reported in Sullivan County (62 injured, 10 killed).
Where do fatal truck crashes happen most in Langdon?
SR-12 had 3 fatal crashes involving a large truck within 10 miles of Langdon since 2015, more than any other road.
What is the worst month for truck crashes in Langdon?
The worst month is March: 15.0% of truck crashes in Sullivan County happen then.
How many garbage truck accidents happen in Langdon?
Garbage trucks were involved in 2 reported crashes in Sullivan County since 2015 (1.6% of truck crashes).
What is the truck crash rate in Langdon compared with New Hampshire?
The yearly rate is 25.4 truck crashes per 100,000 residents in Sullivan County, vs 30.4 for New Hampshire.
What is the best way to plan truck routes in Langdon?
The free Route Planner takes your stops and returns a route risk score, safer alternatives and low-bridge warnings.
2026 is a partial year. Updated October 2026.