
Total Traffic Volume & Performance in Warren County, Illinois
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day1,793 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 11.6% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 32.4 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. | 6.7% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 49.3 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $67,697 |
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A typical monitored road in Warren County, Illinois sees 1,793 vehicles per day, while its 291 miles of monitored roads together handle 500,342 vehicle-miles traveled per day (≈183 million per year). Trucks are 11.6% of traffic, close to the 10.2% across Illinois.
Traffic 79% below the Illinois average
Warren sees 79% lower average daily traffic volume than the state average (1,793 vehicles per day against 8,480), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. Across the whole network, that travel is about 0.2% of Illinois's statewide total. By volume, Warren's 1,793 vehicles per day trails 89% of counties in Illinois.
The average trip takes 32.4 minutes, 5% lower than the state level. Its average travel time of 32.4 minutes is shorter than 71% of counties in Illinois.
Congestion runs 67% lower than the state level, at a ratio of 6.7%, which means smoother traffic flow - delays are rare enough to plan travel times almost to the minute.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Warren County, Illinois
| Traffic | vehicles per day3,379 |
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| Trucks | 14.2% |
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| Average travel time | 43.4 min |
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| Congestion ratio | 8.3% |
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| Drivers’ average age | 49.0 yrs |
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| Drivers’ average income | $65,293 |
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Highways carry more than half of all travel in Warren County, Illinois (56% of vehicle-miles). The average highway carries 3,379 vehicles per day, 117% more than the average non-highway road in the same area, which carries 1,558 vehicles per day.
With 26% of the road miles (77 miles in 216 segments), highways punch above their length, carrying 280,911 vehicle-miles traveled per day (≈103 million per year).
Fewer highway trucks than 89% of counties in Illinois
Highway truck concentration here runs 18% lower than the state average, at 14.2%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
Warren's highway truck share (14.2%) is lower than 72% of counties in Illinois. By raw truck volume, Warren carries fewer highway trucks than 89% of counties in Illinois.

Non-highway Traffic in Warren County, Illinois
| Traffic | vehicles per day1,558 |
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| Trucks | 8.1% |
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| Average travel time | 30.8 min |
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| Congestion ratio | 6.5% |
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| Drivers’ average age | 49.6 yrs |
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| Drivers’ average income | $70,229 |
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A significant share of driving in Warren County, Illinois, 44% of vehicle-miles, happens on local roads. A typical local road sees 1,558 vehicles per day.
Spread over 214 miles and 1,459 segments, 74% of the road network, local roads carry a lighter load per mile: 219,431 vehicle-miles traveled per day (≈80.1 million per year). About 1 in 12 vehicles on non-highway roads is a truck (8.1%).
Local congestion 69% below the Illinois average
The concentration of trucks on non-highway roads is 43% lower than on highways.
The non-highway congestion ratio of 6.5% is 69% lower than the state level, suggesting more efficient local mobility than the state average.
Trip origins here have lower average income than 62% of counties in Illinois. The driver population here skews younger than 55% of counties in Illinois.