Tiffin, IA truck route planning & crash data
Plan safer truck routes in Tiffin: commercial truck and garbage truck crashes in Tiffin and Johnson County, dangerous roads, seasonality and route safety data for fleets. Patterns use Johnson County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
20 of 1,147 truck crashes since 2015.
Deadliest roads
How Johnson County compares with Iowa
Johnson County against Iowa and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Johnson County stands out
Full comparison
| Measure (2015–2025) | Johnson County | Iowa | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 61.7 | 68.1 | 49.7 | 9% below the state |
| Deaths per 100 crashes | 3.6 | 3.5 | 3.4 | same |
| Injuries per crash | 0.42 | 0.41 | 0.49 | same |
| Garbage-truck share | 1.7% | 2.2% | 2.3% | 24% below the state |
| On snow, slush or ice | 20.1% | 18.7% | 6.2% | 1.1× the state |
| Morning rush (6–10 am) | 21.4% | 24.0% | 23.7% | 11% below the state |
| In rain, sleet or snow | 18.4% | 15.1% | 13.8% | 1.2× the state |
| Winter months (Nov–Mar) | 47.3% | 45.4% | 41.9% | same |
| After dark | 27.1% | 23.1% | 24.8% | 1.2× the state |
Johnson County has lower values than Iowa for crashes per 100k residents / yr, garbage-truck share and morning rush (6–10 am). Where it is higher: on snow, slush or ice, in rain, sleet or snow and after dark.
What stands out in Tiffin: I-80 10 fatal truck crashes since 2015, more than any other road within 10 miles of Tiffin.
Overview
Johnson County has recorded 1,147 truck crashes since 2015, with 466 people injured and 40 killed.
Across the years with complete reporting, that is roughly one truck crash every 4 days.
Tiffin had 30 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Johnson County numbers.
43% of truck crash reports in Johnson County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
January has the most truck crashes, 12.4% of the yearly total, while September has the fewest (6.5%).
Winter months (Nov–Mar) carry 47.3% of truck crashes, vs 45.4% for Iowa.
The busiest hour is 3–4 pm, with 7.6% of truck crashes.
20.1% of truck crashes here happened on snow, slush or ice, against 18.7% across Iowa.
Where crashes happen
The deadliest road for trucks within 10 miles of Tiffin is I-80, with 10 fatal large-truck crashes since 2015. After it: CR-F52/BLACK Diamond Rd Sw (1), I-380 (1) and SR-1 (1).
Garbage & waste trucks
20 crashes involved a garbage or refuse truck, a 1.7% share (Iowa: 2.2%).
The most garbage-truck crashes happen in May (15%).
Route planning tips for Tiffin fleets
- Review driver schedules for January, the month with the most truck crashes.
- Check whether your routes use I-80, the road with the most fatal truck crashes in this area.
- Garbage-truck crashes here peak in May; review collection routes for that month.
- 20.1% of truck crashes were on snow, slush or ice, above Iowa; plan winter equipment checks before the season.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
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 Johnson County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-80 | 10 |
| CR-F52/BLACK Diamond Rd Sw | 1 |
| I-380 | 1 |
| SR-1 | 1 |
| US-218 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Johnson County) |
|---|---|
| I-80 | 76 |
| Interstate 80/I 80 | 63 |
| I-380 | 29 |
| Interstate 380/I 380 | 28 |
| US-218 | 23 |
| US-6 | 15 |
| State 1/Iowa 1 | 6 |
| Ia 1 | 5 |
Tiffin at a glance
| Population | 6,695 |
| Land area | 4.3 sq mi |
| Density | 1,549 per sq mi |
| Median household income (ZIP 52340) | $98,393 |
| Median home value (ZIP 52340) | $348,315 |
Waste facilities and haulers nearby
Historical data: truck crashes in Johnson 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 | 40 | — | 1.7 |
| 2000s | 71 | +79% | 2.2 |
| 2010s | 92 | +29% | 1.7 |
| 2020s | 100 | +9% | 2.0 |
From the 1990s to the 2020s, yearly reported truck crashes went from 40 to 100. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 2.5 a year in 2016–19 and 2.0 a year in 2020–24.
Nearby places
Questions fleets ask about Tiffin
How common are truck crashes in Tiffin?
1,147 truck crashes have been reported in Johnson County since 2015, with 40 deaths and 466 injuries.
Which road has the most fatal truck crashes in Tiffin?
Since 2015, I-80 has had the most fatal large-truck crashes within 10 miles of Tiffin: 10.
What is the worst month for truck crashes in Tiffin?
The worst month is January: 12.4% of truck crashes in Johnson County happen then.
Are garbage truck crashes common in Tiffin?
Garbage trucks were involved in 20 reported crashes in Johnson County since 2015 (1.7% of truck crashes).
What is the truck crash rate in Tiffin compared with Iowa?
Per 100,000 residents, Johnson County has 61.7 truck crashes a year; Iowa has 68.1.
How do I plan a garbage truck route in Tiffin?
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.