ZIP 21738 (Glenwood, MD) truck route planning & crash data
Plan safer truck routes around ZIP 21738: commercial truck and garbage truck crashes here and in Howard 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
0.0 deaths per 100 garbage-truck crashes vs 2.0 for all trucks.
Deadliest roads
How Howard County compares with Maryland
Howard County against Maryland and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Howard County stands out
Full comparison
| Measure (2015–2025) | Howard County | Maryland | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 61.9 | 49.3 | 49.7 | 1.3× the state |
| Deaths per 100 crashes | 2.0 | 2.2 | 3.4 | 9% below the state |
| Injuries per crash | 0.41 | 0.53 | 0.49 | 23% below the state |
| Garbage-truck share | 2.2% | 3.1% | 2.3% | 28% below the state |
| On snow, slush or ice | 2.5% | 2.4% | 6.2% | same |
| Morning rush (6–10 am) | 26.0% | 24.7% | 23.7% | same |
| In rain, sleet or snow | 13.5% | 13.8% | 13.8% | same |
| Winter months (Nov–Mar) | 40.7% | 40.4% | 41.9% | same |
| After dark | 28.3% | 25.2% | 24.8% | 1.1× the state |
Compared with Maryland, Howard County is lower on deaths per 100 crashes, injuries per crash and garbage-truck share. It runs above Maryland on crashes per 100k residents / yr and after dark.
What stands out in ZIP 21738: I-70 8 fatal truck crashes since 2015, more than any other road within 10 miles of ZIP 21738.
Overview
Howard County has recorded 2,423 truck crashes since 2015, with 1,016 people injured and 49 killed.
That averages about one truck crash every 2 days in fully reported years.
When crashes happen
Truck crashes peak in October (9.9% of the year) and are lowest in April (6.5%).
Winter months (Nov–Mar) carry 40.7% of truck crashes, vs 40.4% for Maryland.
More truck crashes happen at 2–3 pm than at any other hour (7.1%).
Snow, slush or ice was on the road in 2.5% of truck crashes, compared with 2.4% in Maryland.
Where crashes happen
The deadliest road for trucks within 10 miles of ZIP 21738 is I-70, with 8 fatal large-truck crashes since 2015. It is followed by SR-32 (5), CR-70 (1) and CR-SYKESVILLE Rd (1).
Garbage & waste trucks
53 crashes involved a garbage or refuse truck, a 2.2% share (Maryland: 3.1%).
Their busiest month is May, with 13% of garbage-truck crashes.
Deaths per 100 garbage-truck crashes: 0.0, vs 2.0 for all truck crashes.
Route planning tips for ZIP 21738 fleets
- Build extra time into October routes: it has the most truck crashes here.
- Look at alternatives to I-70 at busy times: it leads this area in fatal truck crashes.
- For residential and commercial waste routes, look again at May schedules: garbage-truck crashes peak then.
- 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 Howard County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-70 | 8 |
| SR-32 | 5 |
| CR-70 | 1 |
| CR-SYKESVILLE Rd | 1 |
| Mu293 Pullman Ct | 1 |
| SR-27 | 1 |
| SR-97 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Howard County) |
|---|---|
| No Name | 1,054 |
| Washington Blvd | 175 |
| Columbia Pike | 61 |
| Sykesville Rd | 53 |
| Patuxent Pkwy | 53 |
| Waterloo Rd | 52 |
| Acrs Marked Off Road | 42 |
| Is95 | 28 |
ZIP 21738 at a glance
| Population | 3,696 |
| Density | 204 per sq mi |
| Median household income | $250,001 |
| Median home value | $886,375 |
| Home ownership | 98% |
Waste facilities and haulers nearby
Historical data: truck crashes in Howard 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 | 104 | — | 3.6 |
| 2000s | 116 | +12% | 3.5 |
| 2010s | 174 | +50% | 3.1 |
| 2020s | 219 | +26% | 4.4 |
Reported truck crashes averaged 104 a year in the 1990s and 219 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 3.5 a year in 2016–19 and 4.4 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 21738
How many truck crashes happen in ZIP 21738?
2,423 truck crashes have been reported in Howard County since 2015, with 49 deaths and 1,016 injuries.
Where do fatal truck crashes happen most in ZIP 21738?
I-70 had 8 fatal crashes involving a large truck within 10 miles of ZIP 21738 since 2015, more than any other road.
What is the worst month for truck crashes in ZIP 21738?
Truck crashes in Howard County peak in October, with 9.9% of the year's crashes.
How many garbage truck crashes are there in ZIP 21738?
Garbage trucks were involved in 53 reported crashes in Howard County since 2015 (2.2% of truck crashes).
How do truck crashes in ZIP 21738 compare with Maryland?
Per 100,000 residents, Howard County has 61.9 truck crashes a year; Maryland has 49.3.
How can I plan a safer truck route in ZIP 21738?
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.