San Marcos, TX truck route planning & crash data
Plan safer truck routes in San Marcos: commercial truck and garbage truck crashes, 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
3 of 720 truck crashes since 2015.
Deadliest roads
How San Marcos compares with Texas
San Marcos against Texas and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where San Marcos stands out
Full comparison
| Measure (2015–2025) | San Marcos | Texas | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 84.0 | 62.9 | 49.7 | 1.3× the state |
| Deaths per 100 crashes | 3.5 | 4.1 | 3.4 | 15% below the state |
| Injuries per crash | 0.60 | 0.58 | 0.49 | same |
| Garbage-truck share | 0.4% | 1.1% | 2.3% | 60% below the state |
| On snow, slush or ice | 0.3% | 1.7% | 6.2% | 82% below the state |
| Morning rush (6–10 am) | 14.8% | 22.6% | 23.7% | 34% below the state |
| In rain, sleet or snow | 6.7% | 11.3% | 13.8% | 40% below the state |
| Winter months (Nov–Mar) | 40.5% | 40.8% | 41.9% | same |
| After dark | 36.4% | 27.0% | 24.8% | 1.3× the state |
San Marcos sits below Texas on deaths per 100 crashes, garbage-truck share and on snow, slush or ice. It runs above Texas on crashes per 100k residents / yr and after dark.
San Marcos at a glance: 1 in 227 garbage-truck share of crashes is 0.4%, against 1.1% for Texas.
Overview
San Marcos has recorded 720 truck crashes since 2015, with 439 people injured and 24 killed.
In complete reporting years that works out to about one truck crash every 6 days.
When crashes happen
Truck crashes peak in June (10.0% of the year) and are lowest in January (6.0%).
The five winter months (November to March) hold 40.5% of truck crashes, against 40.8% across Texas.
The busiest hour is 1–2 pm, with 8.5% of truck crashes.
Snow, slush or ice was on the road in 0.3% of truck crashes, compared with 1.7% in Texas.
Where crashes happen
I-35 leads within 10 miles of San Marcos with 24 fatal crashes involving a large truck since 2015. Next come SR-123 (7), CR-WATSON Lane (1) and Fm 621 Staples Rd (1).
Garbage & waste trucks
Garbage and refuse trucks were involved in 3 crashes, 0.4% of the total, against 1.1% across Texas.
Route planning tips for San Marcos fleets
- Build extra time into June routes: it has the most truck crashes here.
- Look at alternatives to I-35 at busy times: it leads this area in fatal truck crashes.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
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 Marcos
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-35 | 24 |
| SR-123 | 7 |
| CR-WATSON Lane | 1 |
| Fm 621 Staples Rd | 1 |
| I 35 Frontage | 1 |
| Rm 110 | 1 |
| SR-80 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (San Marcos) |
|---|---|
| I-35 | 62 |
| SR-123 | 15 |
| Wonder World Dr | 12 |
| N 2800 Ih 35 | 10 |
| SR-80 | 10 |
| Sh 123 | 10 |
| Hunter Rd | 9 |
| S 3900 Ih 35 | 8 |
San Marcos at a glance
| Population | 74,316 |
| Land area | 39.9 sq mi |
| Density | 1,861 per sq mi |
Waste facilities and haulers nearby
Historical data: truck crashes in San Marcos 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 | 24 | — | 1.4 |
| 2000s | 0 | -100% | 3.0 |
| 2010s | 35 | +45% | 3.9 |
| 2020s | 69 | +99% | 4.2 |
From the 1990s to the 2020s, yearly reported truck crashes went from 24 to 69. Some of the change may reflect how crashes were reported. Fatal large-truck crashes: 5.2 a year in 2016–19, 4.2 a year in 2020–24.
Nearby places
Questions fleets ask about San Marcos
How many truck crashes happen in San Marcos?
San Marcos has had 720 reported truck crashes since 2015, injuring 439 people and killing 24.
Where do fatal truck crashes happen most in San Marcos?
NHTSA data shows I-35 with 24 fatal large-truck crashes within 10 miles of San Marcos since 2015, the highest of any road.
What is the worst month for truck crashes in San Marcos?
Truck crashes in San Marcos peak in June, with 10.0% of the year's crashes.
Are garbage truck crashes common in San Marcos?
Since 2015, San Marcos has reported 3 garbage-truck crashes, or 0.4% of its truck crashes.
What is the truck crash rate in San Marcos compared with Texas?
Per 100,000 residents, San Marcos has 84.0 truck crashes a year; Texas has 62.9.
How can I plan a safer truck route in San Marcos?
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.