ZIP 37683 (Mountain City, TN) truck route planning & crash data
Plan safer truck routes around ZIP 37683: commercial truck and garbage truck crashes here and in Johnson 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 of 79 truck crashes since 2015.
Deadliest roads
How Johnson County compares with Tennessee
Johnson County against Tennessee and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Johnson County stands out
Full comparison
| Measure (2015–2025) | Johnson County | Tennessee | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 35.9 | 60.1 | 49.7 | 40% below the state |
| Deaths per 100 crashes | 6.8 | 3.9 | 3.4 | 1.7× the state |
| Injuries per crash | 0.58 | 0.48 | 0.49 | 1.2× the state |
| Garbage-truck share | 2.7% | 1.9% | 2.3% | 1.4× the state |
| On snow, slush or ice | 2.7% | 2.3% | 6.2% | 1.2× the state |
| Morning rush (6–10 am) | 26.0% | 21.8% | 23.7% | 1.2× the state |
| In rain, sleet or snow | 15.1% | 14.9% | 13.8% | same |
| Winter months (Nov–Mar) | 50.7% | 40.5% | 41.9% | 1.3× the state |
| After dark | 17.8% | 25.9% | 24.8% | 31% below the state |
Compared with Tennessee, Johnson County is lower on crashes per 100k residents / yr and after dark. It runs above Tennessee on deaths per 100 crashes, injuries per crash and garbage-truck share.
Johnson County at a glance: January the month with the most truck crashes: 16.5% of the year's total.
Overview
Police reported 79 crashes involving commercial trucks in Johnson County since 2015: 46 people were injured and 5 were killed.
Across the years with complete reporting, that is roughly one truck crash every 55 days.
When crashes happen
Truck crashes peak in January (16.5% of the year) and are lowest in May (2.5%).
The five winter months (November to March) hold 50.7% of truck crashes, against 40.5% across Tennessee.
The busiest hour is 9–10 am, with 10.1% of truck crashes.
Snow, slush or ice was on the road in 2.7% of truck crashes, compared with 2.3% in Tennessee.
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of ZIP 37683 since 2015: CR-PLEASANT Valley Rd (1), SR-67 (1) and US-421 (1). No single road stands out.
Garbage & waste trucks
2 crashes involved a garbage or refuse truck, a 2.5% share (Tennessee: 1.9%).
Route planning tips for ZIP 37683 fleets
- Review driver schedules for January, the month with the most truck crashes.
- 26.0% of truck crashes happen between 6 and 10 am, above Tennessee; consider earlier or later starts where possible.
- With 2.7% of truck crashes on snow, slush or ice (above Tennessee), plan winter equipment checks early.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Johnson County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| CR-PLEASANT Valley Rd | 1 |
| SR-67 | 1 |
| US-421 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Johnson County) |
|---|---|
| SR-91N | 10 |
| SR-67W | 10 |
| SR-421S | 9 |
| US-421 | 8 |
| Roan Creek Rd | 5 |
| SR-421N | 5 |
| Tn-91 | 5 |
| Tn-67 | 4 |
ZIP 37683 at a glance
| Population | 12,943 |
| Density | 37 per sq mi |
| Median household income | $55,979 |
| Median home value | $177,040 |
| Home ownership | 77% |
Waste facilities and haulers nearby
Historical data: truck crashes in Johnson 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 | — | 0.3 |
| 2000s | 5 | +112% | 0.5 |
| 2010s | 6 | +9% | 0.4 |
| 2020s | 6 | +6% | 0.2 |
From the 1990s to the 2020s, yearly reported truck crashes went from 2 to 6. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 0.8 a year in 2016–19 and 0.2 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 37683
How many truck accidents are there in ZIP 37683?
Since 2015, 79 crashes involving commercial trucks were reported in Johnson County (46 injured, 5 killed).
What is the worst month for truck crashes in ZIP 37683?
January has the most truck crashes in Johnson County, 16.5% of the yearly total.
How many garbage truck accidents happen in ZIP 37683?
Garbage trucks were involved in 2 reported crashes in Johnson County since 2015 (2.5% of truck crashes).
How do truck crashes in ZIP 37683 compare with Tennessee?
Johnson County records 35.9 truck crashes per 100,000 residents a year, against 60.1 across Tennessee.
How do I plan a garbage truck route in ZIP 37683?
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.