Harper, ND truck route planning & crash data
Plan safer truck routes in Harper: commercial truck and garbage truck crashes in Harper and Slope County, dangerous roads, seasonality and route safety data for fleets. Patterns use Slope County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
0 of 20 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
Slope County at a glance: August worst month: 15.0% of truck crashes, vs 8.3% in an average month.
Overview
Since 2015, 20 crashes involving commercial trucks have been reported in Slope County. They injured 9 people and killed 1.
In complete reporting years that works out to about one truck crash every 211 days.
Harper had 0 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Slope County numbers.
90% of truck crash reports in Slope County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
Truck crashes peak in August (15.0% of the year) and are lowest in October (0.0%).
Where crashes happen
No fatal crash involving a large truck has a recorded location within 10 miles of Harper since 2015.
Garbage & waste trucks
No crashes involving garbage or refuse trucks have been reported in Slope County since 2015.
Route planning tips for Harper fleets
- Review driver schedules for August, the month with the most truck crashes.
- 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 Slope County
Most dangerous roads for trucks
No fatal crashes involving a large truck with a road name were recorded within 10 miles since 2015.
Harper at a glance
| Population | 0 |
| Land area | 35.7 sq mi |
| Density | 0 per sq mi |
| Median household income (ZIP 58651) | $75,956 |
| Median home value (ZIP 58651) | $116,556 |
Historical data: truck crashes in Slope 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 | 2 | — | 0.0 |
| 2000s | 1 | -66% | 0.0 |
| 2010s | 4 | +517% | 0.5 |
| 2020s | 1 | -77% | 0.0 |
Reported truck crashes averaged 2 a year in the 1990s and 1 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 0.2 a year in 2016–19 and 0.0 a year in 2020–24.
Nearby places
Questions fleets ask about Harper
How many truck crashes happen in Harper?
Since 2015, 20 crashes involving commercial trucks were reported in Slope County (9 injured, 1 killed).
Which month has the most truck crashes in Harper?
Truck crashes in Slope County peak in August, with 15.0% of the year's crashes.
How many garbage truck accidents happen in Harper?
0 crashes involving garbage or refuse trucks have been reported in Slope County since 2015, 0.0% of all truck crashes.
What is the best way to plan truck routes in Harper?
Paste your stops into the free CurbWaste Route Planner: it scores your route against fatal-crash locations, suggests safer alternatives and flags low bridges.
2026 is a partial year. Updated October 2026.