Jolley, IA truck route planning & crash data
Plan safer truck routes in Jolley: commercial truck and garbage truck crashes in Jolley and Calhoun County, dangerous roads, seasonality and route safety data for fleets. Patterns use Calhoun County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
0 of 110 truck crashes since 2015.
Deadliest roads
How Calhoun County compares with Iowa
Calhoun County against Iowa and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Calhoun County stands out
Full comparison
| Measure (2015–2025) | Calhoun County | Iowa | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 98.3 | 68.1 | 49.7 | 1.4× the state |
| Deaths per 100 crashes | 7.6 | 3.5 | 3.4 | 2.2× the state |
| Injuries per crash | 0.42 | 0.41 | 0.49 | same |
| Garbage-truck share | 0.0% | 2.2% | 2.3% | 100% below the state |
| On snow, slush or ice | 28.6% | 18.7% | 6.2% | 1.5× the state |
| Morning rush (6–10 am) | 23.8% | 24.0% | 23.7% | same |
| In rain, sleet or snow | 20.9% | 15.1% | 13.8% | 1.4× the state |
| Winter months (Nov–Mar) | 49.5% | 45.4% | 41.9% | 1.1× the state |
| After dark | 20.0% | 23.1% | 24.8% | 13% below the state |
Compared with Iowa, Calhoun County is lower on garbage-truck share and after dark. It runs above Iowa on crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
Calhoun County at a glance: 0 garbage-truck share of crashes is 0.0%, against 2.2% for Iowa.
Overview
Since 2015, 110 crashes involving commercial trucks have been reported in Calhoun County. They injured 50 people and killed 8.
In complete reporting years that works out to about one truck crash every 38 days.
With 0 truck crashes reported in Jolley since 2015, this page uses Calhoun County numbers for its patterns and comparisons.
74% of truck crash reports in Calhoun 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 (12.7% of the year) and are lowest in March (4.5%).
The five winter months (November to March) hold 49.5% of truck crashes, against 45.4% across Iowa.
More truck crashes happen at 10–11 am than at any other hour (11.8%).
Road surface: 28.6% of truck crashes were on snow, slush or ice (Iowa: 18.7%).
Where crashes happen
SR-4 leads within 10 miles of Jolley with 4 fatal crashes involving a large truck since 2015. It is followed by US-20 (1).
Garbage & waste trucks
FMCSA lists no garbage-truck crashes in Calhoun County since 2015.
Route planning tips for Jolley fleets
- Plan January schedules with more margin; it is the worst month for truck crashes in Calhoun County.
- Look at alternatives to SR-4 at busy times: it leads this area in fatal truck crashes.
- Icy and snowy roads show up in 28.6% of truck crashes here, more than Iowa; schedule winter checks early.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
About the data
Sources: the FMCSA crash file for all reported truck crashes and NHTSA FARS for fatal crashes with a large truck. Every statement here comes straight from those numbers.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Calhoun County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-4 | 4 |
| US-20 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Calhoun County) |
|---|---|
| US-20 | 14 |
| Us 20/Us20 | 10 |
| Ia 4 | 8 |
| Dakota Ave | 2 |
| Dakota Ave And Railway St | 2 |
| Ia 175 | 2 |
| N028/Dakota Ave And Us 20/Us20 | 2 |
| N065/Sigourney Ave And Us 20/U | 2 |
Jolley at a glance
| Population | 28 |
| Land area | 0.1 sq mi |
| Density | 322 per sq mi |
Waste facilities and haulers nearby
Historical data: truck crashes in Calhoun 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 | 2 | — | 0.5 |
| 2000s | 5 | +185% | 0.3 |
| 2010s | 9 | +72% | 0.5 |
| 2020s | 10 | +10% | 0.4 |
Reported truck crashes averaged 2 a year in the 1990s and 10 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. NHTSA counts 0.5 fatal large-truck crashes a year in 2016–19 and 0.4 a year in 2020–24.
Nearby places
Questions fleets ask about Jolley
How many truck crashes happen in Jolley?
Calhoun County has had 110 reported truck crashes since 2015, injuring 50 people and killing 8.
Where do fatal truck crashes happen most in Jolley?
SR-4 had 4 fatal crashes involving a large truck within 10 miles of Jolley since 2015, more than any other road.
Which month has the most truck crashes in Jolley?
The worst month is January: 12.7% of truck crashes in Calhoun County happen then.
How many garbage truck crashes are there in Jolley?
Garbage trucks were involved in 0 reported crashes in Calhoun County since 2015 (0.0% of truck crashes).
How does Jolley compare with Iowa for truck crashes?
Per 100,000 residents, Calhoun County has 98.3 truck crashes a year; Iowa has 68.1.
What is the best way to plan truck routes in Jolley?
Use the free Route Planner: enter your stops to get a risk score, safer alternatives and the low bridges on your route.
2026 is a partial year. Updated October 2026.