Three Rocks, CA truck route planning & crash data
Plan safer truck routes in Three Rocks: commercial truck and garbage truck crashes in Three Rocks and Fresno County, dangerous roads, seasonality and route safety data for fleets. Patterns use Fresno County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
2.9 deaths per 100 garbage-truck crashes vs 6.3 for all trucks.
Deadliest roads
How Fresno County compares with California
Fresno County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Fresno County stands out
Full comparison
| Measure (2015–2025) | Fresno County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 39.2 | 33.2 | 49.7 | 1.2× the state |
| Deaths per 100 crashes | 6.3 | 3.6 | 3.4 | 1.8× the state |
| Injuries per crash | 0.48 | 0.44 | 0.49 | 1.1× the state |
| Garbage-truck share | 1.5% | 1.6% | 2.3% | same |
| On snow, slush or ice | 0.6% | 0.9% | 6.2% | 39% below the state |
| Morning rush (6–10 am) | 25.5% | 23.5% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 3.7% | 6.5% | 13.8% | 43% below the state |
| Winter months (Nov–Mar) | 36.9% | 40.2% | 41.9% | 8% below the state |
| After dark | 26.7% | 29.1% | 24.8% | 8% below the state |
Compared with California, Fresno County is lower on on snow, slush or ice, in rain, sleet or snow and winter months (nov–mar). It runs above California on crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash.
What stands out in Fresno County: 6.3 deaths for every 100 truck crashes, against 3.6 across California.
Overview
Fresno County has recorded 4,617 truck crashes since 2015, with 2,260 people injured and 281 killed.
Across the years with complete reporting, that is roughly 1 truck crash every day.
Only 0 truck crashes were reported in Three Rocks since 2015; patterns below come from Fresno County as a whole.
When crashes happen
The worst month is August with 11.9% of truck crashes; the quietest is February at 5.8%.
Winter months (Nov–Mar) carry 36.9% of truck crashes, vs 40.2% for California.
The busiest hour is 8–9 am, with 8.0% of truck crashes.
Snow, slush or ice was on the road in 0.6% of truck crashes, compared with 0.9% in California.
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of Three Rocks since 2015: I-5 (2), SR-33 (2), Calaveras Av (1), Mount Whitney Ave (1) and W Clarkson Ave (1). No single road stands out.
Garbage & waste trucks
73 crashes involved a garbage or refuse truck, a 1.6% share (California: 1.6%).
Their busiest month is May, with 11% of garbage-truck crashes.
They recorded 2.9 deaths per 100 crashes, against 6.3 for all trucks.
Route planning tips for Three Rocks fleets
- Build extra time into August routes: it has the most truck crashes here.
- Waste haulers: May is the peak month for garbage-truck crashes in Fresno County.
- Morning starts matter: 25.5% of truck crashes fall between 6 and 10 am, higher than California.
- 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 Fresno County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-5 | 2 |
| SR-33 | 2 |
| Calaveras Av | 1 |
| Mount Whitney Ave | 1 |
| W Clarkson Ave | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Fresno County) |
|---|---|
| I-5 | 34 |
| SR-99 | 26 |
| Sr-99 N/B | 21 |
| Sr-99 S/B | 15 |
| SR-180 | 10 |
| Jensen Ave | 7 |
| SR-43 | 7 |
| Manning Ave | 6 |
Three Rocks at a glance
| Land area | 0.8 sq mi |
| Median household income (ZIP 93608) | $42,609 |
Waste facilities and haulers nearby
Historical data: truck crashes in Fresno 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 | 3 | — | 21.2 |
| 2000s | 245 | +8077% | 15.1 |
| 2010s | 311 | +27% | 12.3 |
| 2020s | 434 | +39% | 21.2 |
In the 1990s about 3 truck crashes a year were reported; in the 2020s, about 434. Reporting coverage also changed between these periods. NHTSA counts 15.0 fatal large-truck crashes a year in 2016–19 and 21.2 a year in 2020–24.
Nearby places
Questions fleets ask about Three Rocks
How common are truck crashes in Three Rocks?
4,617 truck crashes have been reported in Fresno County since 2015, with 281 deaths and 2,260 injuries.
What is the worst month for truck crashes in Three Rocks?
August has the most truck crashes in Fresno County, 11.9% of the yearly total.
Are garbage truck crashes common in Three Rocks?
Since 2015, Fresno County has reported 73 garbage-truck crashes, or 1.6% of its truck crashes.
How do truck crashes in Three Rocks compare with California?
Per 100,000 residents, Fresno County has 39.2 truck crashes a year; California has 33.2.
What is the best way to plan truck routes in Three Rocks?
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.