San Mar, MD truck route planning & crash data
Plan safer truck routes in San Mar: commercial truck and garbage truck crashes in San Mar and Washington County, dangerous roads, seasonality and route safety data for fleets. Patterns use Washington County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
19 of 1,894 truck crashes since 2015.
Deadliest roads
How Washington County compares with Maryland
Washington County against Maryland and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Washington County stands out
Full comparison
| Measure (2015–2025) | Washington County | Maryland | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 103.7 | 49.3 | 49.7 | 2.1× the state |
| Deaths per 100 crashes | 2.9 | 2.2 | 3.4 | 1.3× the state |
| Injuries per crash | 0.46 | 0.53 | 0.49 | 13% below the state |
| Garbage-truck share | 1.1% | 3.1% | 2.3% | 65% below the state |
| On snow, slush or ice | 2.2% | 2.4% | 6.2% | 10% below the state |
| Morning rush (6–10 am) | 17.8% | 24.7% | 23.7% | 28% below the state |
| In rain, sleet or snow | 17.1% | 13.8% | 13.8% | 1.2× the state |
| Winter months (Nov–Mar) | 39.8% | 40.4% | 41.9% | same |
| After dark | 30.2% | 25.2% | 24.8% | 1.2× the state |
Compared with Maryland, Washington County is lower on injuries per crash, garbage-truck share and on snow, slush or ice. It stands out for higher crashes per 100k residents / yr, deaths per 100 crashes and in rain, sleet or snow.
Washington County at a glance: 1 in 94 of truck crashes here involve garbage trucks: 1.1%, vs 3.1% in Maryland.
Overview
Since 2015, 1,894 crashes involving commercial trucks have been reported in Washington County. They injured 861 people and killed 53.
Across the years with complete reporting, that is roughly one truck crash every 2 days.
Only 0 truck crashes were reported in San Mar since 2015; patterns below come from Washington County as a whole.
85% of truck crash reports in Washington County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
Truck crashes peak in December (9.8% of the year) and are lowest in February (6.8%).
November through March accounts for 39.8% of truck crashes here, compared with 40.4% in Maryland.
More truck crashes happen at 12–1 pm than at any other hour (7.3%).
2.2% of truck crashes here happened on snow, slush or ice, against 2.4% across Maryland.
Where crashes happen
The deadliest road for trucks within 10 miles of San Mar is I-70, with 18 fatal large-truck crashes since 2015. It is followed by I-81 (6), CR-123 (2) and CR-16 (1).
Garbage & waste trucks
19 crashes involved a garbage or refuse truck, a 1.0% share (Maryland: 3.1%).
Route planning tips for San Mar fleets
- Review driver schedules for December, the month with the most truck crashes.
- Where you can, review stops along I-70; it has the most fatal large-truck crashes nearby.
- 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 Washington County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-70 | 18 |
| I-81 | 6 |
| CR-123 | 2 |
| CR-16 | 1 |
| SR-34 | 1 |
| SR-632 | 1 |
| SR-77 | 1 |
| US-11 | 1 |
| US-40 | 1 |
| Us-40Al | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Washington County) |
|---|---|
| Eisenhower Memorial Hwy | 519 |
| Maryland Veterans Memorial Hwy | 384 |
| National Freeway | 59 |
| Halfway Blvd | 52 |
| Acrs Marked Off Road | 41 |
| Greencastle Pike | 30 |
| Hopewell Rd | 25 |
| National Pike | 23 |
San Mar at a glance
| Land area | 0.5 sq mi |
| Median household income (ZIP 21713) | $96,199 |
| Median home value (ZIP 21713) | $364,429 |
Waste facilities and haulers nearby
Historical data: truck crashes in Washington 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 | 69 | — | 2.1 |
| 2000s | 78 | +12% | 2.5 |
| 2010s | 117 | +50% | 2.8 |
| 2020s | 180 | +54% | 3.0 |
From the 1990s to the 2020s, yearly reported truck crashes went from 69 to 180. Some of the change may reflect how crashes were reported. Fatal large-truck crashes: 3.5 a year in 2016–19, 3.0 a year in 2020–24.
Nearby places
Questions fleets ask about San Mar
How common are truck crashes in San Mar?
Washington County has had 1,894 reported truck crashes since 2015, injuring 861 people and killing 53.
What is the most dangerous road for trucks in San Mar?
NHTSA data shows I-70 with 18 fatal large-truck crashes within 10 miles of San Mar since 2015, the highest of any road.
What is the worst month for truck crashes in San Mar?
Truck crashes in Washington County peak in December, with 9.8% of the year's crashes.
How many garbage truck crashes are there in San Mar?
19 crashes involving garbage or refuse trucks have been reported in Washington County since 2015, 1.0% of all truck crashes.
What is the truck crash rate in San Mar compared with Maryland?
Washington County records 103.7 truck crashes per 100,000 residents a year, against 49.3 across Maryland.
What is the best way to plan truck routes in San Mar?
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.