ZIP 21157 (Westminster, MD) truck route planning & crash data
Plan safer truck routes around ZIP 21157: commercial truck and garbage truck crashes here and in Carroll 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
2.4 deaths per 100 garbage-truck crashes vs 3.4 for all trucks.
Deadliest roads
How Carroll County compares with Maryland
Carroll County against Maryland and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Carroll County stands out
Full comparison
| Measure (2015–2025) | Carroll County | Maryland | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 40.2 | 49.3 | 49.7 | 18% below the state |
| Deaths per 100 crashes | 3.4 | 2.2 | 3.4 | 1.5× the state |
| Injuries per crash | 0.42 | 0.53 | 0.49 | 21% below the state |
| Garbage-truck share | 5.2% | 3.1% | 2.3% | 1.7× the state |
| On snow, slush or ice | 2.5% | 2.4% | 6.2% | same |
| Morning rush (6–10 am) | 28.4% | 24.7% | 23.7% | 1.2× the state |
| In rain, sleet or snow | 13.9% | 13.8% | 13.8% | same |
| Winter months (Nov–Mar) | 39.4% | 40.4% | 41.9% | same |
| After dark | 18.0% | 25.2% | 24.8% | 29% below the state |
Carroll County has lower values than Maryland for crashes per 100k residents / yr, injuries per crash and after dark. It runs above Maryland on deaths per 100 crashes, garbage-truck share and morning rush (6–10 am).
Carroll County at a glance: 1 in 19 garbage-truck share of crashes is 5.2%, against 3.1% for Maryland.
Overview
Police reported 833 crashes involving commercial trucks in Carroll County since 2015: 360 people were injured and 27 were killed.
That averages about one truck crash every 5 days in fully reported years.
When crashes happen
The worst month is October with 10.6% of truck crashes; the quietest is March at 7.1%.
November through March accounts for 39.4% of truck crashes here, compared with 40.4% in Maryland.
The busiest hour is 9–10 am, with 8.3% of truck crashes.
2.5% of truck crashes here happened on snow, slush or ice, against 2.4% across Maryland.
Where crashes happen
SR-140 leads within 10 miles of ZIP 21157 with 5 fatal crashes involving a large truck since 2015. It is followed by SR-27 (4), SR-30 (4) and SR-26 (2).
Garbage & waste trucks
Garbage trucks account for 44 of the truck crashes here, or 5.3%, compared with 3.1% in Maryland.
The most garbage-truck crashes happen in November (20%).
Deaths per 100 garbage-truck crashes: 2.4, vs 3.4 for all truck crashes.
Route planning tips for ZIP 21157 fleets
- Build extra time into October routes: it has the most truck crashes here.
- Where you can, review stops along SR-140; it has the most fatal large-truck crashes nearby.
- Garbage-truck crashes here peak in November; review collection routes for that month.
- 28.4% of truck crashes happen between 6 and 10 am, above Maryland; 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 Carroll County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-140 | 5 |
| SR-27 | 4 |
| SR-30 | 4 |
| SR-26 | 2 |
| SR-32 | 2 |
| CR-142 | 1 |
| CR-175 | 1 |
| CR-SYKESVILLE Rd | 1 |
| SR-31 | 1 |
| SR-7 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Carroll County) |
|---|---|
| Baltimore Blvd | 113 |
| Ridge Rd | 65 |
| Liberty Rd | 56 |
| Littlestown Pike | 43 |
| Sykesville Rd | 33 |
| Hanover Pike | 30 |
| Francis Scott Key Hwy | 15 |
| Balto National Pike | 15 |
ZIP 21157 at a glance
| Population | 38,984 |
| Density | 194 per sq mi |
| Median household income | $104,966 |
| Median home value | $424,017 |
| Home ownership | 77% |
Waste facilities and haulers nearby
Historical data: truck crashes in Carroll 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 | 34 | — | 2.3 |
| 2000s | 50 | +44% | 2.5 |
| 2010s | 57 | +15% | 2.0 |
| 2020s | 75 | +32% | 2.2 |
From the 1990s to the 2020s, yearly reported truck crashes went from 34 to 75. Some of the change may reflect how crashes were reported. Fatal large-truck crashes: 2.8 a year in 2016–19, 2.2 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 21157
How common are truck crashes in ZIP 21157?
Since 2015, 833 crashes involving commercial trucks were reported in Carroll County (360 injured, 27 killed).
Where do fatal truck crashes happen most in ZIP 21157?
Since 2015, SR-140 has had the most fatal large-truck crashes within 10 miles of ZIP 21157: 5.
When do most truck crashes happen in ZIP 21157?
October has the most truck crashes in Carroll County, 10.6% of the yearly total.
Are garbage truck crashes common in ZIP 21157?
Garbage trucks were involved in 44 reported crashes in Carroll County since 2015 (5.3% of truck crashes).
How does ZIP 21157 compare with Maryland for truck crashes?
Per 100,000 residents, Carroll County has 40.2 truck crashes a year; Maryland has 49.3.
What is the best way to plan truck routes in ZIP 21157?
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.