
Total Traffic Volume & Performance in Douglas County, Washington
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day4,552 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 7.8% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 32.7 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 14.6% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 46.0 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $88,457 |
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A typical monitored road in Douglas County, Washington sees 4,552 vehicles per day, while its 331 miles of monitored roads together handle 1,068,265 vehicle-miles traveled per day (≈390 million per year). Trucks are 7.8% of traffic, close to the 7.1% across Washington.
Traffic 38% below the Washington average
Douglas sees 38% lower average daily traffic volume than the state average (4,552 vehicles per day against 7,322), suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Across the whole network, that travel is about 0.7% of Washington's statewide total. Douglas carries more traffic than 61% of counties in Washington.
Journey times here (32.7 minutes on average) closely track the state level. On travel time, Douglas runs shorter than 63% of counties in Washington.
Congestion runs 26% lower than the state level, at a ratio of 14.6%, which means smoother traffic flow - travel times are easy to plan around for scheduled deliveries.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Douglas County, Washington
| Traffic | vehicles per day10,372 |
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| Trucks | 8.8% |
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| Average travel time | 39.2 min |
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| Congestion ratio | 26.9% |
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| Drivers’ average age | 46.3 yrs |
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| Drivers’ average income | $83,839 |
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Highways carry more than half of all travel in Douglas County, Washington (58% of vehicle-miles). The average highway carries 10,372 vehicles per day, 179% more than the average non-highway road in the same area, which carries 3,711 vehicles per day.
With 21% of the road miles (68 miles in 372 segments), highways punch above their length, carrying 616,755 vehicle-miles traveled per day (≈225 million per year).
Lower highway truck share than 66% of counties in Washington
At 8.8%, highway truck share is 7% lower than the state average. The highway traffic mix is typical for Washington: neither freight- nor commuter-dominated.
Douglas's highway truck share (8.8%) is lower than 66% of counties in Washington. By raw truck volume, Douglas carries fewer highway trucks than 59% of counties in Washington.

Non-highway Traffic in Douglas County, Washington
| Traffic | vehicles per day3,711 |
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| Trucks | 6.5% |
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| Average travel time | 31.8 min |
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| Congestion ratio | 12.9% |
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| Drivers’ average age | 45.8 yrs |
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| Drivers’ average income | $92,294 |
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A significant share of driving in Douglas County, Washington, 42% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 3,711 vehicles per day.
Local roads make up 79% of the monitored road miles (262 miles in 2,573 segments) but carry less than their share of travel: 451,510 vehicle-miles traveled per day (≈165 million per year). About 1 in 15 vehicles on non-highway roads is a truck (6.5%).
Drivers from higher-income areas than 76% of counties in Washington
The concentration of trucks on non-highway roads is 27% lower than on highways.
The non-highway congestion ratio of 12.9% is 34% lower than the state level, suggesting more efficient local mobility than the state average.
76% of counties in Washington see lower average driver income among trip origins than Douglas. Douglas's median driver age is lower than 58% of counties in Washington.