Diagonal, IA truck route planning & crash data
Plan safer truck routes in Diagonal: commercial truck and garbage truck crashes in Diagonal and Ringgold County, dangerous roads, seasonality and route safety data for fleets. Patterns use Ringgold County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
1 of 27 truck crashes since 2015.
Deadliest roads
How Ringgold County compares with Iowa
Ringgold County against Iowa and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Ringgold County stands out
Full comparison
| Measure (2015–2025) | Ringgold County | Iowa | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 49.3 | 68.1 | 49.7 | 28% below the state |
| Deaths per 100 crashes | 28.0 | 3.5 | 3.4 | 8.0× the state |
| Injuries per crash | 0.36 | 0.41 | 0.49 | 12% below the state |
| Garbage-truck share | 4.0% | 2.2% | 2.3% | 1.8× the state |
| On snow, slush or ice | 8.0% | 18.7% | 6.2% | 57% below the state |
| Morning rush (6–10 am) | 20.0% | 24.0% | 23.7% | 17% below the state |
| In rain, sleet or snow | 12.0% | 15.1% | 13.8% | 21% below the state |
| Winter months (Nov–Mar) | 32.0% | 45.4% | 41.9% | 30% below the state |
| After dark | 12.0% | 23.1% | 24.8% | 48% below the state |
Ringgold County has lower values than Iowa for crashes per 100k residents / yr, injuries per crash and on snow, slush or ice. Where it is higher: deaths per 100 crashes and garbage-truck share.
Ringgold County at a glance: 28.0 deaths for every 100 truck crashes, against 3.5 across Iowa.
Overview
Police reported 27 crashes involving commercial trucks in Ringgold County since 2015: 9 people were injured and 7 were killed.
Across the years with complete reporting, that is roughly one truck crash every 161 days.
Diagonal had 0 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Ringgold County numbers.
52% of truck crash reports in Ringgold County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
Truck crashes peak in January (18.5% of the year) and are lowest in March (0.0%).
November through March accounts for 32.0% of truck crashes here, compared with 45.4% in Iowa.
The busiest hour is 11 am–12 pm, with 22.2% of truck crashes.
8.0% of truck crashes here happened on snow, slush or ice, against 18.7% across Iowa.
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of Diagonal happened on SR-2 (1); no road leads clearly.
Garbage & waste trucks
1 crash involved a garbage or refuse truck, a 3.7% share (Iowa: 2.2%).
Route planning tips for Diagonal fleets
- Review driver schedules for January, the month with the most truck crashes.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
About the data
This report uses the FMCSA crash file (reported crashes of trucks over 10,000 lb) and NHTSA FARS (fatal crashes). It reports the numbers without guessing at reasons.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Ringgold County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-2 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Ringgold County) |
|---|---|
| Ia 2 | 4 |
| Ia 25 | 2 |
| 0.1 Mile West Of Mount Ayr On | 1 |
| 120Th Ave | 1 |
| 210Th St | 1 |
| 280Th Ave | 1 |
| 280Th St Measuring 1713 Feet | 1 |
| County Highway J23 | 1 |
Diagonal at a glance
| Population | 331 |
| Land area | 0.9 sq mi |
| Density | 363 per sq mi |
| Median household income (ZIP 50845) | $66,563 |
| Median home value (ZIP 50845) | $102,323 |
Waste facilities and haulers nearby
Historical data: truck crashes in Ringgold 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 | 0 | — | 0.2 |
| 2000s | 1 | +500% | 0.0 |
| 2010s | 2 | +70% | 0.2 |
| 2020s | 3 | +57% | 0.0 |
From the 2000s to the 2020s, yearly reported truck crashes went from 1 to 3. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 0.5 a year in 2016–19 and 0.0 a year in 2020–24.
Nearby places
Questions fleets ask about Diagonal
How many truck crashes happen in Diagonal?
27 truck crashes have been reported in Ringgold County since 2015, with 7 deaths and 9 injuries.
Which month has the most truck crashes in Diagonal?
Truck crashes in Ringgold County peak in January, with 18.5% of the year's crashes.
Are garbage truck crashes common in Diagonal?
Since 2015, Ringgold County has reported 1 garbage-truck crash, or 3.7% of its truck crashes.
How do truck crashes in Diagonal compare with Iowa?
The yearly rate is 49.3 truck crashes per 100,000 residents in Ringgold County, vs 68.1 for Iowa.
What is the best way to plan truck routes in Diagonal?
Paste your stops into the free CurbWaste Route Planner: it scores your route against fatal-crash locations, suggests safer alternatives and flags low bridges.
2026 is a partial year. Updated October 2026.