ZIP 20629 (Dowell, MD) truck route planning & crash data
Plan safer truck routes around ZIP 20629: commercial truck and garbage truck crashes here and in Calvert 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
16 of 269 truck crashes since 2015.
Deadliest roads
How Calvert County compares with Maryland
Calvert County against Maryland and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Calvert County stands out
Full comparison
| Measure (2015–2025) | Calvert County | Maryland | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 24.6 | 49.3 | 49.7 | 50% below the state |
| Deaths per 100 crashes | 4.7 | 2.2 | 3.4 | 2.1× the state |
| Injuries per crash | 0.54 | 0.53 | 0.49 | same |
| Garbage-truck share | 5.5% | 3.1% | 2.3% | 1.8× the state |
| On snow, slush or ice | 2.7% | 2.4% | 6.2% | 1.1× the state |
| Morning rush (6–10 am) | 26.9% | 24.7% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 13.6% | 13.8% | 13.8% | same |
| Winter months (Nov–Mar) | 40.1% | 40.4% | 41.9% | same |
| After dark | 15.2% | 25.2% | 24.8% | 40% below the state |
Compared with Maryland, Calvert County is lower on crashes per 100k residents / yr and after dark. Where it is higher: deaths per 100 crashes, garbage-truck share and on snow, slush or ice.
The headline for Calvert County: 4.7 deaths for every 100 truck crashes, against 2.2 across Maryland.
Overview
Police reported 269 crashes involving commercial trucks in Calvert County since 2015: 143 people were injured and 12 were killed.
That averages about one truck crash every 16 days in fully reported years.
When crashes happen
Truck crashes peak in May (11.5% of the year) and are lowest in July (5.6%).
The five winter months (November to March) hold 40.1% of truck crashes, against 40.4% across Maryland.
By time of day, 12–1 pm stands out with 9.7% of truck crashes.
2.7% of truck crashes here happened on snow, slush or ice, against 2.4% across Maryland.
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of ZIP 20629 happened on SR-4 (2) and SR-235 (1); no road leads clearly.
Garbage & waste trucks
16 crashes involved a garbage or refuse truck, a 5.9% share (Maryland: 3.1%).
Route planning tips for ZIP 20629 fleets
- Review driver schedules for May, the month with the most truck crashes.
- Morning starts matter: 26.9% of truck crashes fall between 6 and 10 am, higher than Maryland.
- Icy and snowy roads show up in 2.7% of truck crashes here, more than Maryland; schedule winter checks early.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Calvert County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-4 | 2 |
| SR-235 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Calvert County) |
|---|---|
| Solomons Island Rd | 93 |
| Southern Md Blvd | 23 |
| Hallowing Point Rd | 20 |
| Chesapeake Beach Rd | 8 |
| Acrs Marked Off Road | 7 |
| Md 2 - Solomons Island Rd (Sb/L) | 4 |
| Pond Woods Rd | 4 |
| Md231 Hallowing Point Rd | 3 |
ZIP 20629 at a glance
| Population | 1,150 |
| Density | 529 per sq mi |
| Median household income | $87,389 |
| Median home value | $408,681 |
| Home ownership | 97% |
Waste facilities and haulers nearby
Historical data: truck crashes in Calvert 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 | 10 | — | 0.7 |
| 2000s | 18 | +84% | 0.7 |
| 2010s | 21 | +15% | 0.5 |
| 2020s | 23 | +10% | 0.6 |
Reported truck crashes averaged 10 a year in the 1990s and 23 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 0.5 a year in 2016–19 and 0.6 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 20629
How many truck crashes happen in ZIP 20629?
Since 2015, 269 crashes involving commercial trucks were reported in Calvert County (143 injured, 12 killed).
What is the worst month for truck crashes in ZIP 20629?
May has the most truck crashes in Calvert County, 11.5% of the yearly total.
Are garbage truck crashes common in ZIP 20629?
16 crashes involving garbage or refuse trucks have been reported in Calvert County since 2015, 5.9% of all truck crashes.
What is the truck crash rate in ZIP 20629 compared with Maryland?
Calvert County records 24.6 truck crashes per 100,000 residents a year, against 49.3 across Maryland.
What is the best way to plan truck routes in ZIP 20629?
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.