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Traffic | vehicles per day1,334 |
|---|---|
Trucks | 12.0% |
Average travel time | 39.0 min |
Congestion ratio | 5.1% |
Drivers’ average age | 48.9 yrs |
Drivers’ average income | $71,873 |
A typical monitored road in Sac County, Iowa sees 1,334 vehicles per day, while its 339 miles of monitored roads together handle 502,078 vehicle-miles traveled per day (≈183 million per year). Trucks are 12.0% of traffic, close to the 11.0% across Iowa.
At 1,334 vehicles per day, the average monitored road in Sac carries 56% less traffic than the state average of 3,042, suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Sac accounts for about 0.6% of Iowa's statewide total of vehicle-miles. 74% of counties in Iowa see more traffic than Sac's 1,334 vehicles per day.
At 39.0 minutes, the average travel time is 18% higher than the state level. On travel time, Sac runs longer than 92% of counties in Iowa.
The congestion ratio of 5.1% is 56% lower, pointing to smoother traffic flow than the state level - delays are rare enough to plan travel times almost to the minute.
| Traffic | vehicles per day2,918 |
|---|---|
| Trucks | 14.8% |
| Average travel time | 59.2 min |
| Congestion ratio | 6.3% |
| Drivers’ average age | 47.7 yrs |
| Drivers’ average income | $71,514 |
Highways carry more than half of all travel in Sac County, Iowa (56% of vehicle-miles). The average highway carries 2,918 vehicles per day, 178% more than the average non-highway road in the same area, which carries 1,048 vehicles per day.
With 25% of the road miles (84 miles in 259 segments), highways punch above their length, carrying 279,006 vehicle-miles traveled per day (≈102 million per year).
Highway truck concentration here runs 8% lower than the state average, at 14.8%. The highway traffic mix is typical for Iowa: neither freight- nor commuter-dominated.
By truck concentration, highways here outrank 54% of counties in Iowa. 80% of counties in Iowa see more highway trucks per day than Sac's roughly 430.
| Traffic | vehicles per day1,048 |
|---|---|
| Trucks | 8.5% |
| Average travel time | 35.4 min |
| Congestion ratio | 4.8% |
| Drivers’ average age | 51.1 yrs |
| Drivers’ average income | $72,067 |
A significant share of driving in Sac County, Iowa, 44% of vehicle-miles, happens on local roads. A typical local road sees 1,048 vehicles per day.
Spread over 255 miles and 1,431 segments, 75% of the road network, local roads carry a lighter load per mile: 223,072 vehicle-miles traveled per day (≈81.4 million per year). The truck share on non-highway roads is 8.5%.
Compared to highways, non-highway routes see 42% fewer trucks by share.
Non-highway congestion (4.8%) runs 57% lower than the state average, pointing to smoother local traffic flow.
Sac's average driver income is higher than 50% of counties in Iowa. Sac's median driver age is lower than 58% of counties in Iowa.
Mobile device location data (anonymized and aggregated)
Road sensor networks and traffic counters
Historical traffic pattern databases
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