Sonora, CA truck route planning & crash data
Plan safer truck routes in Sonora: commercial truck and garbage truck crashes in Sonora and Tuolumne County, dangerous roads, seasonality and route safety data for fleets. Patterns use Tuolumne County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
2 of 249 truck crashes since 2015.
Deadliest roads
How Tuolumne County compares with California
Tuolumne County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Tuolumne County stands out
Full comparison
| Measure (2015–2025) | Tuolumne County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 39.3 | 33.2 | 49.7 | 1.2× the state |
| Deaths per 100 crashes | 4.3 | 3.6 | 3.4 | 1.2× the state |
| Injuries per crash | 0.44 | 0.44 | 0.49 | same |
| Garbage-truck share | 0.9% | 1.6% | 2.3% | 48% below the state |
| On snow, slush or ice | 5.1% | 0.9% | 6.2% | 5.5× the state |
| Morning rush (6–10 am) | 30.5% | 23.5% | 23.7% | 1.3× the state |
| In rain, sleet or snow | 6.4% | 6.5% | 13.8% | same |
| Winter months (Nov–Mar) | 33.5% | 40.2% | 41.9% | 17% below the state |
| After dark | 14.6% | 29.1% | 24.8% | 50% below the state |
Tuolumne County has lower values than California for garbage-truck share, winter months (nov–mar) and after dark. Where it is higher: crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
Tuolumne County at a glance: 5.1% share of truck crashes on snow, slush or ice (California: 0.9%).
Overview
Police reported 249 crashes involving commercial trucks in Tuolumne County since 2015: 113 people were injured and 10 were killed.
In complete reporting years that works out to about one truck crash every 17 days.
With 3 truck crashes reported in Sonora since 2015, this page uses Tuolumne County numbers for its patterns and comparisons.
When crashes happen
October has the most truck crashes, 13.3% of the yearly total, while January has the fewest (2.8%).
The five winter months (November to March) hold 33.5% of truck crashes, against 40.2% across California.
The busiest hour is 7–8 am, with 11.7% of truck crashes.
5.1% of truck crashes here happened on snow, slush or ice, against 0.9% across California.
Where crashes happen
Within this area, SR-108 had the most fatal crashes involving a large truck since 2015 (3). After it: SR-49 (2) and SR-4 (1).
Garbage & waste trucks
2 crashes involved a garbage or refuse truck, a 0.8% share (California: 1.6%).
Route planning tips for Sonora fleets
- Plan October schedules with more margin; it is the worst month for truck crashes in Tuolumne County.
- Where you can, review stops along SR-108; it has the most fatal large-truck crashes nearby.
- Morning starts matter: 30.5% of truck crashes fall between 6 and 10 am, higher than California.
- Icy and snowy roads show up in 5.1% of truck crashes here, more than California; schedule winter checks early.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Tuolumne County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-108 | 3 |
| SR-49 | 2 |
| SR-4 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Tuolumne County) |
|---|---|
| SR-108 | 6 |
| SR-120 | 5 |
| SR-49 | 3 |
| La Grange Rd | 2 |
| La Grange Rd/1.4M S Old Don Pedro Rd | 2 |
| Obyrnes Ferry Rd/300Ft S Calaveras Tuolumne Co Ln | 2 |
| Rt108/S Washington St | 2 |
| Rt120/.5M W La Grange Rd | 2 |
Sonora at a glance
| Population | 4,855 |
| Land area | 3.2 sq mi |
| Density | 1,535 per sq mi |
| Median household income (ZIP 95370) | $82,990 |
| Median home value (ZIP 95370) | $442,984 |
Waste facilities and haulers nearby
Historical data: truck crashes in Tuolumne 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 | — | — | 1.2 |
| 2000s | 19 | — | 1.2 |
| 2010s | 16 | -14% | 0.6 |
| 2020s | 23 | +41% | 1.6 |
Reported truck crashes averaged 19 a year in the 2000s and 23 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 1.6 a year in 2020–24.
Nearby places
Questions fleets ask about Sonora
How many truck crashes happen in Sonora?
249 truck crashes have been reported in Tuolumne County since 2015, with 10 deaths and 113 injuries.
Which road has the most fatal truck crashes in Sonora?
NHTSA data shows SR-108 with 3 fatal large-truck crashes within 10 miles of Sonora since 2015, the highest of any road.
When do most truck crashes happen in Sonora?
Truck crashes in Tuolumne County peak in October, with 13.3% of the year's crashes.
How many garbage truck crashes are there in Sonora?
Garbage trucks were involved in 2 reported crashes in Tuolumne County since 2015 (0.8% of truck crashes).
What is the truck crash rate in Sonora compared with California?
Tuolumne County records 39.3 truck crashes per 100,000 residents a year, against 33.2 across California.
How do I plan a garbage truck route in Sonora?
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.