ZIP 91942 (La Mesa, CA) truck route planning & crash data
Plan safer truck routes around ZIP 91942: commercial truck and garbage truck crashes here and in San Diego County, dangerous roads, seasonality and route safety data for fleets.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
2.8 deaths per 100 garbage-truck crashes vs 3.6 for all trucks.
Deadliest roads
How San Diego County compares with California
San Diego County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where San Diego County stands out
Full comparison
| Measure (2015–2025) | San Diego County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 17.6 | 33.2 | 49.7 | 47% below the state |
| Deaths per 100 crashes | 3.6 | 3.6 | 3.4 | same |
| Injuries per crash | 0.51 | 0.44 | 0.49 | 1.2× the state |
| Garbage-truck share | 2.8% | 1.6% | 2.3% | 1.7× the state |
| On snow, slush or ice | 0.3% | 0.9% | 6.2% | 70% below the state |
| Morning rush (6–10 am) | 26.3% | 23.5% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 7.4% | 6.5% | 13.8% | 1.1× the state |
| Winter months (Nov–Mar) | 41.8% | 40.2% | 41.9% | same |
| After dark | 28.0% | 29.1% | 24.8% | same |
Compared with California, San Diego County is lower on crashes per 100k residents / yr and on snow, slush or ice. It runs above California on injuries per crash, garbage-truck share and morning rush (6–10 am).
What stands out in San Diego County: 1 in 36 of truck crashes here involve garbage trucks: 2.8%, vs 1.6% in California.
Overview
Police reported 6,646 crashes involving commercial trucks in San Diego County since 2015: 3,402 people were injured and 235 were killed.
Across the years with complete reporting, that is roughly 2 truck crashes every day.
When crashes happen
The worst month is March with 8.8% of truck crashes; the quietest is November at 7.8%.
Winter months (Nov–Mar) carry 41.8% of truck crashes, vs 40.2% for California.
By time of day, 7–8 am stands out with 7.0% of truck crashes.
0.3% of truck crashes here happened on snow, slush or ice, against 0.9% across California.
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of ZIP 91942 since 2015: I-15 (5), I-5 (5), SR-163 (5), I-805 (4) and I-8 (3). No single road stands out.
Garbage & waste trucks
181 crashes involved a garbage or refuse truck, a 2.7% share (California: 1.6%).
The most garbage-truck crashes happen in July (12%).
Per 100 crashes, garbage trucks recorded 2.8 deaths compared with 3.6 for all trucks.
Route planning tips for ZIP 91942 fleets
- Plan March schedules with more margin; it is the worst month for truck crashes in San Diego County.
- Garbage-truck crashes here peak in July; review collection routes for that month.
- Morning starts matter: 26.3% of truck crashes fall between 6 and 10 am, higher than California.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in San Diego County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-15 | 5 |
| I-5 | 5 |
| SR-163 | 5 |
| I-805 | 4 |
| I-8 | 3 |
| SR-15 | 3 |
| SR-52 | 3 |
| SR-54 | 2 |
| 1000 Sixth Ave | 1 |
| 5th Ave | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (San Diego County) |
|---|---|
| I-5 | 33 |
| I-805 | 29 |
| I-15 | 28 |
| SR-15 | 10 |
| I-8 | 9 |
| SR-78 | 7 |
| Sr-78 E/B | 7 |
| SR-52 | 5 |
ZIP 91942 at a glance
| Population | 41,424 |
| Density | 2,772 per sq mi |
| Median household income | $92,896 |
| Median home value | $773,116 |
| Home ownership | 46% |
Waste facilities and haulers nearby
Historical data: truck crashes in San Diego 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 | 2 | — | 14.4 |
| 2000s | 411 | +20465% | 16.2 |
| 2010s | 514 | +25% | 12.4 |
| 2020s | 570 | +11% | 19.8 |
Reported truck crashes averaged 2 a year in the 1990s and 570 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal crashes involving a large truck averaged 13.5 a year in 2016–19 and 19.8 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 91942
How many truck accidents are there in ZIP 91942?
6,646 truck crashes have been reported in San Diego County since 2015, with 235 deaths and 3,402 injuries.
When do most truck crashes happen in ZIP 91942?
March has the most truck crashes in San Diego County, 8.8% of the yearly total.
How many garbage truck accidents happen in ZIP 91942?
Garbage trucks were involved in 181 reported crashes in San Diego County since 2015 (2.7% of truck crashes).
How do truck crashes in ZIP 91942 compare with California?
Per 100,000 residents, San Diego County has 17.6 truck crashes a year; California has 33.2.
How can I plan a safer truck route in ZIP 91942?
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.