Byron, CA truck route planning & crash data
Plan safer truck routes in Byron: commercial truck and garbage truck crashes in Byron 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. Where it is higher: injuries per crash, garbage-truck share and morning rush (6–10 am).
What stands out in Contra Costa County: 1 in 38 crashes involve a garbage truck (60 since 2015), vs 1.6% across California.
Overview
Police reported 2,377 crashes involving commercial trucks in Contra Costa County since 2015: 1,171 people were injured and 73 were killed.
That averages about one truck crash every 2 days in fully reported years.
With 1 truck crash reported in Byron since 2015, this page uses Contra Costa County numbers for its patterns and comparisons.
When crashes happen
August has the most truck crashes, 10.1% of the yearly total, while November has the fewest (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%).
Snow, slush or ice was on the road in 0.1% of truck crashes, compared with 0.9% in California.
Where crashes happen
SR-4 leads within 10 miles of Byron with 12 fatal crashes involving a large truck since 2015. After it: Vasco Rd (2), Byron Hwy (1) and CR-ALTAMONT Pass Rd (1).
Garbage & waste trucks
Garbage trucks account for 60 of the truck crashes here, or 2.5%, compared with 1.6% in California.
Garbage-truck crashes peak in February (15% of them).
They recorded 3.3 deaths per 100 crashes, against 3.1 for all trucks.
Route planning tips for Byron fleets
- Plan August schedules with more margin; it is the worst month for truck crashes in Contra Costa County.
- Look at alternatives to SR-4 at busy times: it leads this area in fatal truck crashes.
- Garbage-truck crashes here peak in February; review collection routes for that month.
- The morning rush (6–10 am) holds 26.3% of truck crashes here, more than California; adjust start times where you can.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
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 Contra Costa County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-4 | 12 |
| Vasco Rd | 2 |
| Byron Hwy | 1 |
| CR-ALTAMONT Pass Rd | 1 |
| CR-MARSH Creek Road | 1 |
| CR-VASCO 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 |
Byron at a glance
| Land area | 6.5 sq mi |
| Median household income (ZIP 94505) | $146,480 |
| Median home value (ZIP 94505) | $823,010 |
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 |
In the 2000s about 123 truck crashes a year were reported; in the 2020s, about 207. Reporting coverage also changed between these periods. Fatal large-truck crashes: 5.8 a year in 2016–19, 6.2 a year in 2020–24.
Nearby places
Questions fleets ask about Byron
How common are truck crashes in Byron?
Contra Costa County has had 2,377 reported truck crashes since 2015, injuring 1,171 people and killing 73.
Which road has the most fatal truck crashes in Byron?
NHTSA data shows SR-4 with 12 fatal large-truck crashes within 10 miles of Byron since 2015, the highest of any road.
When do most truck crashes happen in Byron?
Truck crashes in Contra Costa County peak in August, with 10.1% of the year's crashes.
How many garbage truck accidents happen in Byron?
Garbage trucks were involved in 60 reported crashes in Contra Costa County since 2015 (2.5% of truck crashes).
How does Byron compare with California for truck crashes?
The yearly rate is 17.7 truck crashes per 100,000 residents in Contra Costa County, vs 33.2 for California.
What is the best way to plan truck routes in Byron?
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.