Lagunitas-Forest Knolls, CA truck route planning & crash data
Plan safer truck routes in Lagunitas-Forest Knolls: commercial truck and garbage truck crashes in Lagunitas-Forest Knolls and Marin County, dangerous roads, seasonality and route safety data for fleets. Patterns use Marin County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
21 of 487 truck crashes since 2015.
Deadliest roads
How Marin County compares with California
Marin County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Marin County stands out
Full comparison
| Measure (2015–2025) | Marin County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 16.3 | 33.2 | 49.7 | 51% below the state |
| Deaths per 100 crashes | 4.3 | 3.6 | 3.4 | 1.2× the state |
| Injuries per crash | 0.37 | 0.44 | 0.49 | 16% below the state |
| Garbage-truck share | 4.1% | 1.6% | 2.3% | 2.5× the state |
| On snow, slush or ice | 0.4% | 0.9% | 6.2% | 54% below the state |
| Morning rush (6–10 am) | 31.7% | 23.5% | 23.7% | 1.3× the state |
| In rain, sleet or snow | 8.7% | 6.5% | 13.8% | 1.3× the state |
| Winter months (Nov–Mar) | 43.4% | 40.2% | 41.9% | 1.1× the state |
| After dark | 16.3% | 29.1% | 24.8% | 44% below the state |
Compared with California, Marin County is lower on crashes per 100k residents / yr, injuries per crash and on snow, slush or ice. It stands out for higher deaths per 100 crashes, garbage-truck share and morning rush (6–10 am).
The headline for Marin County: 1 in 24 of truck crashes here involve garbage trucks: 4.1%, vs 1.6% in California.
Overview
Since 2015, 487 crashes involving commercial trucks have been reported in Marin County. They injured 182 people and killed 20.
In complete reporting years that works out to about one truck crash every 9 days.
Lagunitas-Forest Knolls had 0 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Marin County numbers.
When crashes happen
The worst month is May with 10.1% of truck crashes; the quietest is April at 5.7%.
November through March accounts for 43.4% of truck crashes here, compared with 40.2% in California.
The busiest hour is 8–9 am, with 11.7% of truck crashes.
0.4% of truck crashes here happened on snow, slush or ice, against 0.9% across California.
Where crashes happen
US-101 leads within 10 miles of Lagunitas-Forest Knolls with 2 fatal crashes involving a large truck since 2015. Next come 3rd St (1), CR-LUCAS Vly Rd (1) and Fourth St (1).
Garbage & waste trucks
Garbage trucks account for 21 of the truck crashes here, or 4.3%, compared with 1.6% in California.
Their busiest month is December, with 19% of garbage-truck crashes.
Route planning tips for Lagunitas-Forest Knolls fleets
- Review driver schedules for May, the month with the most truck crashes.
- Look at alternatives to US-101 at busy times: it leads this area in fatal truck crashes.
- For residential and commercial waste routes, look again at December schedules: garbage-truck crashes peak then.
- The morning rush (6–10 am) holds 31.7% of truck crashes here, more than California; adjust start times where you can.
- 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 Marin County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-101 | 2 |
| 3rd St | 1 |
| CR-LUCAS Vly Rd | 1 |
| Fourth St | 1 |
| Loma Linda Ave | 1 |
| Los Ranchitos Rd | 1 |
| Point Reyes Petaluma Rd | 1 |
| SR-1 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Marin County) |
|---|---|
| Us-101 S/B | 9 |
| Bel Marin Keys Bl/Nave Dr | 2 |
| Caledonia St/Pine St | 2 |
| Chileno Valley Rd | 2 |
| N. Knoll Rd | 2 |
| Novato Bl/.4Mi W Of Copper Hill Wy | 2 |
| Rt101/.1M S Alameda Del Prado | 2 |
| Rt101/.1M S San Antonio Rd | 2 |
Lagunitas-Forest Knolls at a glance
| Land area | 4.2 sq mi |
| Median household income (ZIP 94933) | $133,006 |
| Median home value (ZIP 94933) | $873,277 |
Waste facilities and haulers nearby
Historical data: truck crashes in Marin 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 | 33 | — | 0.8 |
| 2010s | 43 | +29% | 0.8 |
| 2020s | 38 | -12% | 1.2 |
From the 2000s to the 2020s, yearly reported truck crashes went from 33 to 38. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 1.2 a year in 2016–19 and 1.2 a year in 2020–24.
Nearby places
Questions fleets ask about Lagunitas-Forest Knolls
How many truck accidents are there in Lagunitas-Forest Knolls?
Since 2015, 487 crashes involving commercial trucks were reported in Marin County (182 injured, 20 killed).
What is the most dangerous road for trucks in Lagunitas-Forest Knolls?
NHTSA data shows US-101 with 2 fatal large-truck crashes within 10 miles of Lagunitas-Forest Knolls since 2015, the highest of any road.
Which month has the most truck crashes in Lagunitas-Forest Knolls?
May has the most truck crashes in Marin County, 10.1% of the yearly total.
How many garbage truck crashes are there in Lagunitas-Forest Knolls?
Garbage trucks were involved in 21 reported crashes in Marin County since 2015 (4.3% of truck crashes).
How do truck crashes in Lagunitas-Forest Knolls compare with California?
Per 100,000 residents, Marin County has 16.3 truck crashes a year; California has 33.2.
How can I plan a safer truck route in Lagunitas-Forest Knolls?
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.