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Traffic | vehicles per day3,156 |
|---|---|
Trucks | 10.3% |
Average travel time | 32.5 min |
Congestion ratio | 12.9% |
Drivers’ average age | 46.1 yrs |
Drivers’ average income | $76,324 |
A typical monitored road in South Dakota sees 3,156 vehicles per day, while its 13,186 miles of monitored roads together handle 24,437,314 vehicle-miles traveled per day (≈8.9 billion per year). About 1 in 10 vehicles is a truck, in line with the US (9.3%).
South Dakota's average daily traffic volume is 55% lower than the national average - 3,156 vehicles per day against 6,986 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.3% of the national total of vehicle-miles. By volume, South Dakota's 3,156 vehicles per day trails 96% of states nationwide.
The average trip takes 32.5 minutes, on par with the national level. On travel time, South Dakota runs shorter than 72% of states nationwide.
At 31% lower than the national level, the 12.9% congestion ratio signals smoother traffic flow - fewer delays make delivery windows more reliable.
| Traffic | vehicles per day5,090 |
|---|---|
| Trucks | 13.6% |
| Average travel time | 37.3 min |
| Congestion ratio | 23.2% |
| Drivers’ average age | 48.2 yrs |
| Drivers’ average income | $75,172 |
Travel in South Dakota splits roughly evenly, with about half of it (52% of vehicle-miles) on highways. The average highway carries 5,090 vehicles per day, 75% more than the average non-highway road in the same area, which carries 2,904 vehicles per day.
Highways make up 25% of the monitored road miles (3,345 miles, 10,489 segments), so they carry more than their share: 12,822,820 vehicle-miles traveled per day (≈4.7 billion per year).
The concentration of trucks on highways (13.6%) is in line with the national average for similar road classifications. The highway traffic mix is typical for the US: neither freight- nor commuter-dominated.
By truck concentration, highways here outrank 52% of states nationwide. 96% of states nationwide see more highway trucks per day than South Dakota's roughly 691.
| Traffic | vehicles per day2,904 |
|---|---|
| Trucks | 6.6% |
| Average travel time | 31.9 min |
| Congestion ratio | 12.8% |
| Drivers’ average age | 45.7 yrs |
| Drivers’ average income | $77,467 |
Travel in South Dakota splits roughly evenly, with about half of it (48% of vehicle-miles) on local roads. The average non-highway road carries 2,904 vehicles per day.
Local roads make up 75% of the monitored road miles (9,842 miles in 80,490 segments) but carry less than their share of travel: 11,614,490 vehicle-miles traveled per day (≈4.2 billion per year). The truck share on non-highway roads is 6.6%.
The concentration of trucks on non-highway roads is 51% lower than on highways.
At 30% lower than the national level, the non-highway congestion ratio of 12.8% signals easier movement on local roads.
Trip origins here have lower average income than 80% of states nationwide. 57% of states nationwide have a younger driver population than South Dakota.
Mobile device location data (anonymized and aggregated)
Road sensor networks and traffic counters
Historical traffic pattern databases
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