Rex, SD truck route planning & crash data
Plan safer truck routes in Rex: commercial truck and garbage truck crashes in Rex and Lyman County, dangerous roads, seasonality and route safety data for fleets. Patterns use Lyman County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
0 of 139 truck crashes since 2015.
Deadliest roads
How Lyman County compares with South Dakota
Lyman County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Lyman County stands out
Full comparison
| Measure (2015–2025) | Lyman County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 320.1 | 42.0 | 49.7 | 7.6× the state |
| Deaths per 100 crashes | 5.3 | 5.2 | 3.4 | same |
| Injuries per crash | 0.12 | 0.13 | 0.49 | 8% below the state |
| Garbage-truck share | 0.0% | 1.6% | 2.3% | 100% below the state |
| On snow, slush or ice | 40.5% | 28.6% | 6.2% | 1.4× the state |
| Morning rush (6–10 am) | 19.1% | 22.2% | 23.7% | 14% below the state |
| In rain, sleet or snow | 24.4% | 17.5% | 13.8% | 1.4× the state |
| Winter months (Nov–Mar) | 55.7% | 48.8% | 41.9% | 1.1× the state |
| After dark | 35.1% | 22.8% | 24.8% | 1.5× the state |
Compared with South Dakota, Lyman County is lower on injuries per crash, garbage-truck share and morning rush (6–10 am). It stands out for higher crashes per 100k residents / yr, on snow, slush or ice and in rain, sleet or snow.
Lyman County at a glance: January the month with the most truck crashes: 20.1% of the year's total.
Overview
Police reported 139 crashes involving commercial trucks in Lyman County since 2015: 25 people were injured and 14 were killed.
Across the years with complete reporting, that is roughly one truck crash every 31 days.
Rex had 0 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Lyman County numbers.
When crashes happen
January has the most truck crashes, 20.1% of the yearly total, while February has the fewest (3.6%).
Winter months (Nov–Mar) carry 55.7% of truck crashes, vs 48.8% for South Dakota.
More truck crashes happen at 8–9 am than at any other hour (7.9%).
Road surface: 40.5% of truck crashes were on snow, slush or ice (South Dakota: 28.6%).
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of Rex happened on I-90 (2); no road leads clearly.
Garbage & waste trucks
Since 2015, no garbage-truck crashes were reported for Lyman County.
Route planning tips for Rex fleets
- Build extra time into January routes: it has the most truck crashes here.
- With 40.5% of truck crashes on snow, slush or ice (above South Dakota), plan winter equipment checks early.
- 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 Lyman County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-90 | 2 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Lyman County) |
|---|---|
| I-90 | 89 |
| Sd Hwy 47 | 22 |
| US-83 | 10 |
| Sd Hwy 248 | 3 |
| 0.169 Miles W Of 324 Ave | 2 |
| Ave | 2 |
| Sd Hwy 273 | 2 |
| US-183 | 2 |
Rex at a glance
| Population | 23 |
| Land area | 35.8 sq mi |
| Density | 1 per sq mi |
| Median household income (ZIP 57569) | $74,722 |
| Median home value (ZIP 57569) | $126,495 |
Historical data: truck crashes in Lyman 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 | 7 | — | 0.4 |
| 2000s | 8 | +19% | 0.2 |
| 2010s | 9 | +18% | 0.3 |
| 2020s | 14 | +47% | 0.4 |
From the 1990s to the 2020s, yearly reported truck crashes went from 7 to 14. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 0.5 a year in 2016–19 and 0.4 a year in 2020–24.
Nearby places
Questions fleets ask about Rex
How many truck accidents are there in Rex?
Lyman County has had 139 reported truck crashes since 2015, injuring 25 people and killing 14.
What is the worst month for truck crashes in Rex?
January has the most truck crashes in Lyman County, 20.1% of the yearly total.
How many garbage truck crashes are there in Rex?
Since 2015, Lyman County has reported 0 garbage-truck crashes, or 0.0% of its truck crashes.
How do truck crashes in Rex compare with South Dakota?
Per 100,000 residents, Lyman County has 320.1 truck crashes a year; South Dakota has 42.0.
How can I plan a safer truck route in Rex?
Use the free Route Planner: enter your stops to get a risk score, safer alternatives and the low bridges on your route.
2026 is a partial year. Updated October 2026.