Knightsen, CA truck route planning & crash data
Plan safer truck routes in Knightsen: commercial truck and garbage truck crashes in Knightsen and Contra Costa County, dangerous roads, seasonality and route safety data for fleets. Patterns use Contra Costa County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
3.3 deaths per 100 garbage-truck crashes vs 3.1 for all trucks.
Deadliest roads
How Contra Costa County compares with California
Contra Costa County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Contra Costa County stands out
Full comparison
| Measure (2015–2025) | Contra Costa County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 17.7 | 33.2 | 49.7 | 47% below the state |
| Deaths per 100 crashes | 3.1 | 3.6 | 3.4 | 14% below the state |
| Injuries per crash | 0.48 | 0.44 | 0.49 | 1.1× the state |
| Garbage-truck share | 2.6% | 1.6% | 2.3% | 1.6× the state |
| On snow, slush or ice | 0.1% | 0.9% | 6.2% | 86% below the state |
| Morning rush (6–10 am) | 26.3% | 23.5% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 7.3% | 6.5% | 13.8% | 1.1× the state |
| Winter months (Nov–Mar) | 40.8% | 40.2% | 41.9% | same |
| After dark | 27.3% | 29.1% | 24.8% | same |
Contra Costa County has lower values than California for crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice. It stands out for higher injuries per crash, garbage-truck share and morning rush (6–10 am).
Contra Costa County at a glance: 1 in 38 crashes involve a garbage truck (60 since 2015), vs 1.6% across California.
Overview
Since 2015, 2,377 crashes involving commercial trucks have been reported in Contra Costa County. They injured 1,171 people and killed 73.
In complete reporting years that works out to about one truck crash every 2 days.
With 0 truck crashes reported in Knightsen since 2015, this page uses Contra Costa County numbers for its patterns and comparisons.
When crashes happen
The worst month is August with 10.1% of truck crashes; the quietest is November at 7.3%.
Winter months (Nov–Mar) carry 40.8% of truck crashes, vs 40.2% for California.
More truck crashes happen at 8–9 am than at any other hour (7.8%).
0.1% of truck crashes here happened on snow, slush or ice, against 0.9% across California.
Where crashes happen
The deadliest road for trucks within 10 miles of Knightsen is SR-4, with 13 fatal large-truck crashes since 2015. Next come Vasco Rd (2), Byron Hwy (1) and CR-MARSH Creek Road (1).
Garbage & waste trucks
Garbage and refuse trucks were involved in 60 crashes, 2.5% of the total, against 1.6% across California.
The most garbage-truck crashes happen in February (15%).
Per 100 crashes, garbage trucks recorded 3.3 deaths compared with 3.1 for all trucks.
Route planning tips for Knightsen fleets
- Review driver schedules for August, the month with the most truck crashes.
- Where you can, review stops along SR-4; it has the most fatal large-truck crashes nearby.
- Garbage-truck crashes here peak in February; review collection routes for that month.
- 26.3% of truck crashes happen between 6 and 10 am, above California; consider earlier or later starts where possible.
- 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 Contra Costa County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-4 | 13 |
| Vasco Rd | 2 |
| Byron Hwy | 1 |
| CR-MARSH Creek Road | 1 |
| CR-VASCO Rd | 1 |
| Neroly Rd | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Contra Costa County) |
|---|---|
| SR-4 | 21 |
| I-680 | 14 |
| Sr-4 W/B | 8 |
| Sr-4 E/B | 5 |
| Richmond Pkwy/Pittsburg Av | 5 |
| Clayton Rd | 4 |
| I-80 | 4 |
| Sr160 Sb/1500Ft N Wilbur Av | 3 |
Knightsen at a glance
| Land area | 8.4 sq mi |
| Median household income (ZIP 94548) | $189,653 |
Waste facilities and haulers nearby
Historical data: truck crashes in Contra Costa 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 | — | — | 4.8 |
| 2000s | 123 | — | 4.4 |
| 2010s | 176 | +43% | 3.7 |
| 2020s | 207 | +17% | 6.2 |
From the 2000s to the 2020s, yearly reported truck crashes went from 123 to 207. Some of the change may reflect how crashes were reported. Fatal large-truck crashes: 5.8 a year in 2016–19, 6.2 a year in 2020–24.
Nearby places
Questions fleets ask about Knightsen
How common are truck crashes in Knightsen?
2,377 truck crashes have been reported in Contra Costa County since 2015, with 73 deaths and 1,171 injuries.
Which road has the most fatal truck crashes in Knightsen?
Since 2015, SR-4 has had the most fatal large-truck crashes within 10 miles of Knightsen: 13.
Which month has the most truck crashes in Knightsen?
The worst month is August: 10.1% of truck crashes in Contra Costa County happen then.
Are garbage truck crashes common in Knightsen?
Since 2015, Contra Costa County has reported 60 garbage-truck crashes, or 2.5% of its truck crashes.
How do truck crashes in Knightsen compare with California?
Contra Costa County records 17.7 truck crashes per 100,000 residents a year, against 33.2 across California.
What is the best way to plan truck routes in Knightsen?
Use the free Route Planner: enter your stops to get a risk score, safer alternatives and the low bridges on your route.
2026 is a partial year. Updated October 2026.