Lake Nacimiento, CA truck route planning & crash data
Plan safer truck routes in Lake Nacimiento: commercial truck and garbage truck crashes in Lake Nacimiento and San Luis Obispo County, dangerous roads, seasonality and route safety data for fleets. Patterns use San Luis Obispo County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
15 of 920 truck crashes since 2015.
Deadliest roads
How San Luis Obispo County compares with California
San Luis Obispo County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where San Luis Obispo County stands out
Full comparison
| Measure (2015–2025) | San Luis Obispo County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 28.4 | 33.2 | 49.7 | 14% below the state |
| Deaths per 100 crashes | 3.3 | 3.6 | 3.4 | 8% below the state |
| Injuries per crash | 0.40 | 0.44 | 0.49 | 9% below the state |
| Garbage-truck share | 1.6% | 1.6% | 2.3% | same |
| On snow, slush or ice | 0.3% | 0.9% | 6.2% | 63% below the state |
| Morning rush (6–10 am) | 24.7% | 23.5% | 23.7% | same |
| In rain, sleet or snow | 5.0% | 6.5% | 13.8% | 23% below the state |
| Winter months (Nov–Mar) | 36.1% | 40.2% | 41.9% | 10% below the state |
| After dark | 24.9% | 29.1% | 24.8% | 15% below the state |
Compared with California, San Luis Obispo County is lower on crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash.
What stands out in San Luis Obispo County: 0.3% on snowy, slushy or icy roads, against 0.9% across California.
Overview
San Luis Obispo County has recorded 920 truck crashes since 2015, with 371 people injured and 30 killed.
That averages about one truck crash every 5 days in fully reported years.
Only 0 truck crashes were reported in Lake Nacimiento since 2015; patterns below come from San Luis Obispo County as a whole.
When crashes happen
The worst month is September with 10.4% of truck crashes; the quietest is January at 5.1%.
November through March accounts for 36.1% of truck crashes here, compared with 40.2% in California.
By time of day, 7–8 am stands out with 7.4% of truck crashes.
0.3% of truck crashes here happened on snow, slush or ice, against 0.9% across California.
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of Lake Nacimiento happened on US-101 (3); no road leads clearly.
Garbage & waste trucks
Garbage and refuse trucks were involved in 15 crashes, 1.6% of the total, against 1.6% across California.
Route planning tips for Lake Nacimiento fleets
- Build extra time into September routes: it has the most truck crashes here.
- 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 San Luis Obispo County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-101 | 3 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (San Luis Obispo County) |
|---|---|
| US-101 | 15 |
| SR-1 | 8 |
| SR-46E | 5 |
| Rt101/Wellsona Rd | 4 |
| SR-41 | 3 |
| Rt46/4220Ft W Lucy Brown Rd | 3 |
| Rt166/4M E Alamo Creek Rd | 3 |
| Creston Rd | 2 |
Lake Nacimiento at a glance
| Land area | 10.5 sq mi |
| Median household income (ZIP 93446) | $97,943 |
| Median home value (ZIP 93446) | $712,131 |
Waste facilities and haulers nearby
Historical data: truck crashes in San Luis Obispo 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 | — | — | 3.2 |
| 2000s | 56 | — | 2.6 |
| 2010s | 72 | +28% | 2.6 |
| 2020s | 80 | +12% | 2.2 |
Reported truck crashes averaged 56 a year in the 2000s and 80 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. NHTSA counts 3.2 fatal large-truck crashes a year in 2016–19 and 2.2 a year in 2020–24.
Nearby places
Questions fleets ask about Lake Nacimiento
How common are truck crashes in Lake Nacimiento?
920 truck crashes have been reported in San Luis Obispo County since 2015, with 30 deaths and 371 injuries.
What is the worst month for truck crashes in Lake Nacimiento?
September has the most truck crashes in San Luis Obispo County, 10.4% of the yearly total.
How many garbage truck accidents happen in Lake Nacimiento?
Garbage trucks were involved in 15 reported crashes in San Luis Obispo County since 2015 (1.6% of truck crashes).
What is the truck crash rate in Lake Nacimiento compared with California?
The yearly rate is 28.4 truck crashes per 100,000 residents in San Luis Obispo County, vs 33.2 for California.
What is the best way to plan truck routes in Lake Nacimiento?
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.